[CHNOSZ-commits] r818 - in pkg/CHNOSZ: . inst vignettes

noreply at r-forge.r-project.org noreply at r-forge.r-project.org
Wed Nov 29 13:01:49 CET 2023


Author: jedick
Date: 2023-11-29 13:01:48 +0100 (Wed, 29 Nov 2023)
New Revision: 818

Modified:
   pkg/CHNOSZ/DESCRIPTION
   pkg/CHNOSZ/inst/CHECKLIST
   pkg/CHNOSZ/inst/NEWS.Rd
   pkg/CHNOSZ/vignettes/FAQ.Rmd
   pkg/CHNOSZ/vignettes/anintro.Rmd
   pkg/CHNOSZ/vignettes/custom_data.Rmd
   pkg/CHNOSZ/vignettes/eos-regress.Rmd
   pkg/CHNOSZ/vignettes/equilibrium.Rmd
   pkg/CHNOSZ/vignettes/multi-metal.Rmd
Log:
Use environment variable to control vignette size


Modified: pkg/CHNOSZ/DESCRIPTION
===================================================================
--- pkg/CHNOSZ/DESCRIPTION	2023-11-29 05:45:23 UTC (rev 817)
+++ pkg/CHNOSZ/DESCRIPTION	2023-11-29 12:01:48 UTC (rev 818)
@@ -1,6 +1,6 @@
 Date: 2023-11-29
 Package: CHNOSZ
-Version: 2.0.0-37
+Version: 2.0.0-38
 Title: Thermodynamic Calculations and Diagrams for Geochemistry
 Authors at R: c(
     person("Jeffrey", "Dick", , "j3ffdick at gmail.com", role = c("aut", "cre"),

Modified: pkg/CHNOSZ/inst/CHECKLIST
===================================================================
--- pkg/CHNOSZ/inst/CHECKLIST	2023-11-29 05:45:23 UTC (rev 817)
+++ pkg/CHNOSZ/inst/CHECKLIST	2023-11-29 12:01:48 UTC (rev 818)
@@ -1,6 +1,6 @@
 ****************************
 Release checklist for CHNOSZ
-    (updated 2023-03-10)
+    (updated 2023-11-29)
 ****************************
 
 - Run examples() and demos() and inspect their output (especially plots)
@@ -73,11 +73,9 @@
 Making vignettes for website (https://chnosz.net)
 *************************************************
 
-- Use dpi <- 72 in anintro.Rmd
+- Build package after setting CHNOSZ_BUILD_LARGE_VIGNETTES environment variable.
 
-- Use hires <- TRUE in multi-metal.Rmd
-
-- After making vignettes, run doc/mklinks.sh in installed directory
+- Install the package and run doc/mklinks.sh within the installation directory.
   (this adds links to the HTML renditions of Rd files)
 
 ***************

Modified: pkg/CHNOSZ/inst/NEWS.Rd
===================================================================
--- pkg/CHNOSZ/inst/NEWS.Rd	2023-11-29 05:45:23 UTC (rev 817)
+++ pkg/CHNOSZ/inst/NEWS.Rd	2023-11-29 12:01:48 UTC (rev 818)
@@ -15,7 +15,7 @@
 \newcommand{\Cp}{\ifelse{latex}{\eqn{C_P}}{\ifelse{html}{\out{<I>C<sub>P</sub></I>}}{Cp}}}
 \newcommand{\DG0}{\ifelse{latex}{\eqn{{\Delta}G^{\circ}}}{\ifelse{html}{\out{Δ<I>G</I>°}}{ΔG°}}}
 
-\section{Changes in CHNOSZ version 2.0.0-36 (2023-11-29)}{
+\section{Changes in CHNOSZ version 2.0.0-38 (2023-11-29)}{
 
     \itemize{
 
@@ -74,6 +74,11 @@
       vaporization, or decomposition). The temperature limit for \Cp equations
       is stored as the opposite (negative) value in OBIGT. See \viglink{FAQ}
       for details.
+      
+      \item The environment variable CHNOSZ_BUILD_LARGE_VIGNETTES is used to
+      control `dpi` in knitr chunk options. Setting this variable results in
+      larger vignettes (used for the CHNOSZ website); if this variable is unset
+      (as on CRAN), a smaller package is built.
 
     }
 

Modified: pkg/CHNOSZ/vignettes/FAQ.Rmd
===================================================================
--- pkg/CHNOSZ/vignettes/FAQ.Rmd	2023-11-29 05:45:23 UTC (rev 817)
+++ pkg/CHNOSZ/vignettes/FAQ.Rmd	2023-11-29 12:01:48 UTC (rev 818)
@@ -135,8 +135,11 @@
            '</div>', sep = '\n')
    }
 )
+
 # Set dpi 20231129
-dpi <- 72
+knitr::opts_chunk$set(
+  dpi = if(nzchar(Sys.getenv("CHNOSZ_BUILD_LARGE_VIGNETTES"))) 100 else 72
+)
 ```
 
 ```{r echo = F, cache = F}
@@ -333,7 +336,7 @@
 ```
 </div>
 
-```{r DEW_Ctot, echo = FALSE, message = FALSE, results = "hide", fig.width = 8, fig.height = 4, out.width = "100%", fig.align = "center", pngquant = pngquant, cache = TRUE, dpi = dpi}
+```{r DEW_Ctot, echo = FALSE, message = FALSE, results = "hide", fig.width = 8, fig.height = 4, out.width = "100%", fig.align = "center", pngquant = pngquant, cache = TRUE}
 ```
 
 *Added on 2023-05-17.*
@@ -495,7 +498,7 @@
 reset()
 ```
 </div>
-```{r pyrrhotite_T, echo = FALSE, message = FALSE, results = "hide", fig.width = 8, fig.height = 2.5, out.width = "100%", fig.align = "center", pngquant = pngquant, dpi = dpi}
+```{r pyrrhotite_T, echo = FALSE, message = FALSE, results = "hide", fig.width = 8, fig.height = 2.5, out.width = "100%", fig.align = "center", pngquant = pngquant}
 ```
 
 For additional polymorphs, we could repeat the above procedure using polymorph 2 as the starting point to calculate `G`, `H`, and `S` of polymorph 3, and so on.
@@ -673,7 +676,7 @@
 
 Here are the three plots that we made:
 
-```{r trisulfur, echo = FALSE, message = FALSE, results = "hide", fig.width = 10, fig.height = 3.33, out.width = "100%", out.extra='class="full-width"', pngquant = pngquant, cache = TRUE, dpi = dpi}
+```{r trisulfur, echo = FALSE, message = FALSE, results = "hide", fig.width = 10, fig.height = 3.33, out.width = "100%", out.extra='class="full-width"', pngquant = pngquant, cache = TRUE}
 ```
 
 *Added on 2023-09-08.*
@@ -802,7 +805,7 @@
   font.main = 1, cex.main = 0.9)
 OBIGT()
 ```
-```{r KMQ_diagram, message = FALSE, fig.width = 8, fig.height = 4, out.width = "100%", results = "hide", echo = FALSE, dpi = dpi}
+```{r KMQ_diagram, message = FALSE, fig.width = 8, fig.height = 4, out.width = "100%", results = "hide", echo = FALSE}
 ```
 
 The gray area, which is automatically drawn by `diagram()`, is below the reducing stability limit of water; that is, this area is where the equilibrium fugacity of `r H2` exceeds unity.

Modified: pkg/CHNOSZ/vignettes/anintro.Rmd
===================================================================
--- pkg/CHNOSZ/vignettes/anintro.Rmd	2023-11-29 05:45:23 UTC (rev 817)
+++ pkg/CHNOSZ/vignettes/anintro.Rmd	2023-11-29 12:01:48 UTC (rev 818)
@@ -81,9 +81,11 @@
 # pngquant isn't available on R-Forge ...
 if (!nzchar(Sys.which("pngquant"))) pngquant <- NULL 
 
-## Use a low resolution to save space in the package
-# Change this to 72 to make higher-resolution images for the CHNOSZ web page
-dpi <- 50
+# Set dpi 20231129
+knitr::opts_chunk$set(
+  dpi = if(nzchar(Sys.getenv("CHNOSZ_BUILD_LARGE_VIGNETTES"))) 72 else 50
+)
+hidpi = if(nzchar(Sys.getenv("CHNOSZ_BUILD_LARGE_VIGNETTES"))) 100 else 50
 
 ## http://stackoverflow.com/questions/23852753/knitr-with-gridsvg
 ## Set up a chunk hook for manually saved plots.
@@ -312,7 +314,7 @@
 subcrt("water", T = c(400, 500, 600), P = c(200, 400, 600), grid = "P")$out$water
 ```
 
-```{r subcrt_water_plot, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, dpi=dpi, out.width="100%", echo=FALSE, message=FALSE, fig.cap="Isothermal contours of density (g cm<sup>-3</sup>) and pressure (bar) of water.", cache=TRUE, pngquant=pngquant, timeit=timeit}
+```{r subcrt_water_plot, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, out.width="100%", echo=FALSE, message=FALSE, fig.cap="Isothermal contours of density (g cm<sup>-3</sup>) and pressure (bar) of water.", cache=TRUE, pngquant=pngquant, timeit=timeit}
 sres <- subcrt("water", T=seq(0,1000,100), P=c(NA, seq(1,500,1)), grid="T")
 water <- sres$out$water
 plot(water$P, water$rho, type = "l")
@@ -370,7 +372,7 @@
 CH4 <- subcrt(c("CH4", "CH4"), c("gas", "aq"), c(-1, 1), T = T)$out$logK
 logK <- data.frame(T, CO2, CO, CH4)
 ```
-```{r CO2_plot, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, dpi=dpi, out.width="100%", echo=FALSE, message=FALSE, fig.cap="Calculated equilibrium constants for dissolution of CO<sub>2</sub>, CO, and CH<sub>4</sub>.", cache=TRUE, pngquant=pngquant, timeit=timeit}
+```{r CO2_plot, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, out.width="100%", echo=FALSE, message=FALSE, fig.cap="Calculated equilibrium constants for dissolution of CO<sub>2</sub>, CO, and CH<sub>4</sub>.", cache=TRUE, pngquant=pngquant, timeit=timeit}
 matplot(logK[, 1], logK[, -1], type = "l", col = 1, lty = 1,
         xlab = axis.label("T"), ylab = axis.label("logK"))
 text(80, -1.7, expr.species("CO2"))
@@ -439,7 +441,7 @@
 
 Use <span style="color:green">`describe.reaction()`</span> to write the reactions on a plot:
 
-```{r describe_reaction_plot, fig.margin=TRUE, fig.width=3.5, fig.height=1.8, tiny.mar=TRUE, dpi=dpi, out.width="100%", pngquant=pngquant, timeit=timeit}
+```{r describe_reaction_plot, fig.margin=TRUE, fig.width=3.5, fig.height=1.8, tiny.mar=TRUE, out.width="100%", pngquant=pngquant, timeit=timeit}
 plot(0, 0, type = "n", axes = FALSE, ann=FALSE, xlim=c(0, 5), ylim=c(5.2, -0.2))
 text(0, 0, "acetoclastic methanogenesis", adj = 0)
 text(5, 1, describe.reaction(acetoclastic$reaction), adj = 1)
@@ -502,7 +504,7 @@
 R's `do.call()` and `rbind()` are used to turn the list into a data frame that can be plotted with R's `matplot()`.
 There, we plot the negative affinities, equal to Gibbs energy, as shown in the plot of Mayumi et al. (2013).
 
-```{r methanogenesis_plot, fig.margin=TRUE, fig.width=4.1, fig.height=4.1, small.mar=TRUE, dpi=dpi, out.width="100%", echo=FALSE, message=FALSE, fig.cap="Gibbs energies of acetate oxidation and methanogenesis (after Mayumi et al., 2013).", cache=TRUE, pngquant=pngquant, timeit=timeit}
+```{r methanogenesis_plot, fig.margin=TRUE, fig.width=4.1, fig.height=4.1, small.mar=TRUE, out.width="100%", echo=FALSE, message=FALSE, fig.cap="Gibbs energies of acetate oxidation and methanogenesis (after Mayumi et al., 2013).", cache=TRUE, pngquant=pngquant, timeit=timeit}
 Adat <- lapply(c(-3, 3), function(logfCO2) {
   basis("CO2", logfCO2)
   data.frame(logfCO2,
@@ -568,7 +570,7 @@
 If both aqueous species and minerals are present, it is common practice to assign a constant activity to all aqueous species and unit activity (i.e. log activity = 0) for minerals.
 More sophisticated diagrams can be made by showing the solubility contours of a metal on the diagram; see [<span style="color:blue">`demo(contour)`</span>](../demo) for an example.
 
-```{r EhpH_plot, fig.margin=TRUE, fig.width=4, fig.height=4, dpi=dpi, out.width="100%", echo = FALSE, message=FALSE, cache=TRUE, fig.cap="Aqueous sulfur species at 25 °C.", pngquant=pngquant, timeit=timeit}
+```{r EhpH_plot, fig.margin=TRUE, fig.width=4, fig.height=4, out.width="100%", echo = FALSE, message=FALSE, cache=TRUE, fig.cap="Aqueous sulfur species at 25 °C.", pngquant=pngquant, timeit=timeit}
 a <- affinity(pH = c(0, 12), Eh = c(-0.5, 1))
 diagram(a, limit.water = TRUE)
 ```
@@ -580,7 +582,7 @@
 ```{r EhpH_plot, echo=TRUE, eval=FALSE}
 ```
 
-```{r EhpH_plot_color, fig.margin=TRUE, fig.width=4, fig.height=4, smallish.mar=TRUE, dpi=dpi, out.width="100%", echo=FALSE, message=FALSE, cache=TRUE, fig.cap="The same plot, with different colors and labels.", pngquant=pngquant, timeit=timeit}
+```{r EhpH_plot_color, fig.margin=TRUE, fig.width=4, fig.height=4, smallish.mar=TRUE, out.width="100%", echo=FALSE, message=FALSE, cache=TRUE, fig.cap="The same plot, with different colors and labels.", pngquant=pngquant, timeit=timeit}
 diagram(a, fill = "terrain", lwd = 2, lty = 3,
         names = c("hydrogen sulfide", "bisulfide", "bisulfate", "sulfate"),
         las = 0)
@@ -617,7 +619,7 @@
 Below, these commands are used to identify the species in an Eh-pH diagram for the Mn-O-H system at 100 °C.
 This diagram includes Mn oxides (pyrolusite, bixbyite, hausmannite), Mn(OH)<sub>2</sub>, and aqueous Mn species.
 
-```{r retrieve_diagram, fig.margin=TRUE, fig.width=5, fig.height=5, dpi=dpi, out.width="100%", message=FALSE, results = "hide", cache=TRUE, fig.cap="Eh-pH diagram for the Mn-O-H system.", pngquant=pngquant, timeit=timeit}
+```{r retrieve_diagram, fig.margin=TRUE, fig.width=5, fig.height=5, out.width="100%", message=FALSE, results = "hide", cache=TRUE, fig.cap="Eh-pH diagram for the Mn-O-H system.", pngquant=pngquant, timeit=timeit}
 # Set decimal logarithm of activity of aqueous species,
 # temperature and plot resolution
 logact <- -4
@@ -688,7 +690,7 @@
 The first call to <span style="color:green">`diagram()`</span> plots the species of interest; the second adds the predominance fields of the basis species.
 We also use <span style="color:green">`water.lines()`</span> to draw dashed blue lines at the water stability limits:
 
-```{r copper_mosaic, fig.margin=TRUE, fig.width=4, fig.height=4, dpi=dpi, out.width="100%", message=FALSE, cache=TRUE, fig.cap="Copper minerals and aqueous complexes with chloride, 200 °C.", pngquant=pngquant, timeit=timeit}
+```{r copper_mosaic, fig.margin=TRUE, fig.width=4, fig.height=4, out.width="100%", message=FALSE, cache=TRUE, fig.cap="Copper minerals and aqueous complexes with chloride, 200 °C.", pngquant=pngquant, timeit=timeit}
 T <- 200
 res <- 200
 bases <- c("H2S", "HS-", "HSO4-", "SO4-2")
@@ -758,7 +760,7 @@
 a$values <- lapply(a$values, `*`, -0.001)
 ```
 
-```{r rainbow_diagram, fig.margin=TRUE, fig.width=4, fig.height=4, dpi=dpi, out.width="100%", echo=FALSE, message=FALSE, cache=TRUE, fig.cap="Affinities of organic synthesis in a hydrothermal system, after Shock and Canovas (2010).", pngquant=pngquant, timeit=timeit}
+```{r rainbow_diagram, fig.margin=TRUE, fig.width=4, fig.height=4, out.width="100%", echo=FALSE, message=FALSE, cache=TRUE, fig.cap="Affinities of organic synthesis in a hydrothermal system, after Shock and Canovas (2010).", pngquant=pngquant, timeit=timeit}
 diagram(a, balance = 1, ylim = c(-100, 100), ylab = quote(italic(A)*", kcal/mol"),
         col = rainbow(8), lwd = 2, bg = "slategray3")
 abline(h = 0, lty = 2, lwd = 2)
@@ -821,7 +823,7 @@
 ```
 
 <!-- put demo(buffer) here for appealing placement on page -->
-```{r demo_buffer_noecho, fig.margin=TRUE, fig.width=4, fig.height=4, dpi=dpi, out.width="100%", message=FALSE, echo=FALSE, cache=TRUE, fig.cap="Values of log<i>f</i><sub>H<sub>2</sub></sub> corresponding to mineral buffers or to given activities of aqueous species.", pngquant=pngquant, timeit=timeit}
+```{r demo_buffer_noecho, fig.margin=TRUE, fig.width=4, fig.height=4, out.width="100%", message=FALSE, echo=FALSE, cache=TRUE, fig.cap="Values of log<i>f</i><sub>H<sub>2</sub></sub> corresponding to mineral buffers or to given activities of aqueous species.", pngquant=pngquant, timeit=timeit}
 demo(buffer, echo = FALSE)
 ```
 Et voilà! We have found log*a*<sub>H<sub>2</sub>S</sub> and `r logfO2` that are compatible with the coexistence of the three minerals.
@@ -864,7 +866,7 @@
 The method based on the Boltzmann equation is fast, but is applicable only to systems where the coefficient on the balanced basis species in each of the formation reactions is one.
 The reaction-matrix method is slower, but can be applied to systems were the balanced basis species has reaction coefficients other than one.
 
-```{r bjerrum_diagram, fig.margin=TRUE, fig.width=3, fig.height=6, dpi=dpi, out.width="100%", echo=FALSE, results="hide", message=FALSE, cache=TRUE, fig.cap="Three views of carbonate speciation: affinity, activity, degree of formation.", pngquant=pngquant, timeit=timeit}
+```{r bjerrum_diagram, fig.margin=TRUE, fig.width=3, fig.height=6, out.width="100%", echo=FALSE, results="hide", message=FALSE, cache=TRUE, fig.cap="Three views of carbonate speciation: affinity, activity, degree of formation.", pngquant=pngquant, timeit=timeit}
 par(mfrow = c(3, 1))
 basis("CHNOS+")
 species(c("CO2", "HCO3-", "CO3-2"))
@@ -922,7 +924,7 @@
 <span style="color:green">`diagram()`</span> is used twice, first to plot the total molality of Al, then the concentrations of the individual species, using `adj` and `dy` to adjust the positions of labels in the *x*- and *y*-directions.
 At the end of the calculation, we use <span style="color:red">`reset()`</span> to restore the default thermodynamic database.
 
-```{r corundum, fig.margin=TRUE, fig.width=4, fig.height=4, dpi=dpi, out.width="100%", results="hide", message=FALSE, cache=TRUE, fig.cap="Solubility of corundum (green line) and equilibrium concentrations of aqueous species (black lines).", pngquant=pngquant, timeit=timeit}
+```{r corundum, fig.margin=TRUE, fig.width=4, fig.height=4, out.width="100%", results="hide", message=FALSE, cache=TRUE, fig.cap="Solubility of corundum (green line) and equilibrium concentrations of aqueous species (black lines).", pngquant=pngquant, timeit=timeit}
 add.OBIGT("SLOP98")
 basis(c("Al+3", "H2O", "H+", "O2"))
 species("corundum")
@@ -1098,7 +1100,7 @@
 ```
 
 <p>
-```{r ATP, fig.fullwidth=TRUE, fig.width=10, fig.height=2.5, dpi=ifelse(dpi==50, 50, 100), out.width="100%", echo=FALSE, message=FALSE, results="hide", fig.cap="Binding of H<sup>+</sup> and Mg<sup>+2</sup> to ATP at 100 °C and *I* = 0 M (first plot) or *I* = 0.25 M (third and fourth plots).", cache=TRUE, pngquant=pngquant, timeit=timeit}
+```{r ATP, fig.fullwidth=TRUE, fig.width=10, fig.height=2.5, dpi=hidpi, out.width="100%", echo=FALSE, message=FALSE, results="hide", fig.cap="Binding of H<sup>+</sup> and Mg<sup>+2</sup> to ATP at 100 °C and *I* = 0 M (first plot) or *I* = 0.25 M (third and fourth plots).", cache=TRUE, pngquant=pngquant, timeit=timeit}
 ```
 </p>
 
@@ -1156,7 +1158,7 @@
 Let's compare experimental values of heat capacity of four proteins, from @PM90, with those calculated using group additivity.
 We divide Privalov and Makhatadze's experimental values by the lengths of the proteins to get per-residue values, then plot them.
 
-```{r protein_Cp, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, dpi=dpi, out.width="100%", echo=FALSE, message=FALSE, fig.cap='The heat capacity calculated by group additivity closely approximates experimental values for aqueous proteins. For a related figure showing the effects of ionization in the calculations, see <span style="color:blue">`?ionize.aa`</span>.', cache=TRUE, pngquant=pngquant, timeit=timeit}
+```{r protein_Cp, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, out.width="100%", echo=FALSE, message=FALSE, fig.cap='The heat capacity calculated by group additivity closely approximates experimental values for aqueous proteins. For a related figure showing the effects of ionization in the calculations, see <span style="color:blue">`?ionize.aa`</span>.', cache=TRUE, pngquant=pngquant, timeit=timeit}
 PM90 <- read.csv(system.file("extdata/cpetc/PM90.csv", package = "CHNOSZ"))
 plength <- protein.length(colnames(PM90)[2:5])
 Cp_expt <- t(t(PM90[, 2:5]) / plength)
@@ -1189,7 +1191,7 @@
 Charged and uncharged sets of basis species are used to to activate and suppress the ionization calculations.
 The calculation of affinity for the ionized proteins returns multiple values (as a function of pH), but there is only one value of affinity returned for the nonionized proteins, so we need to use R's `as.numeric()` to avoid subtracting nonconformable arrays:
 
-```{r protein_ionization, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, dpi=dpi, out.width="100%", echo=FALSE, results="hide", message=FALSE, fig.cap='Affinity of ionization of proteins. See [<span style="color:blue">demo(ionize)</span>](../demo) for ionization properties calculated as a function of temperature and pH.', cache=TRUE, pngquant=pngquant, timeit=timeit}
+```{r protein_ionization, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, out.width="100%", echo=FALSE, results="hide", message=FALSE, fig.cap='Affinity of ionization of proteins. See [<span style="color:blue">demo(ionize)</span>](../demo) for ionization properties calculated as a function of temperature and pH.', cache=TRUE, pngquant=pngquant, timeit=timeit}
 ip <- pinfo(c("CYC_BOVIN", "LYSC_CHICK", "MYG_PHYCA", "RNAS1_BOVIN"))
 basis("CHNOS+")
 a_ion <- affinity(pH = c(0, 14), iprotein = ip)
@@ -1312,7 +1314,7 @@
 The `QEC` keyword to <span style="color:red">`basis()`</span> loads basis species including three amino acids (glutamine, glutamic acid, cysteine, `r h2o`, `r o2`).
 This basis strengthens the relationship between `r zc` and *n*̅<sub>`r o2`</sub>, but weakens that between `r zc` and *n*̅<sub>`r h2o`</sub> (shown in the plots on the right).
 
-```{r rubisco_O2, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, dpi=dpi, out.width="100%", echo=FALSE, results="hide", message=FALSE, fig.cap="Elemental compositions of proteins projected into different sets of basis species.", cache=TRUE, pngquant=pngquant, timeit=timeit}
+```{r rubisco_O2, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, out.width="100%", echo=FALSE, results="hide", message=FALSE, fig.cap="Elemental compositions of proteins projected into different sets of basis species.", cache=TRUE, pngquant=pngquant, timeit=timeit}
 layout(matrix(1:4, nrow = 2))
 par(mgp = c(1.8, 0.5, 0))
 pl <- protein.length(aa)
@@ -1410,7 +1412,7 @@
 The experimental relative abundances are plotted as thin horizontal lines with the same style and color as the thicker curved lines calculated for metastable equilibrium.
 With the exception of YNL049C, the correspondence between the calculations and experiments looks to be greatest near the middle-left part of the figure.
 
-```{r yeastplot, fig.width=6, fig.height=2.5, dpi=ifelse(dpi==50, 50, 100), out.width="100%", echo=FALSE, message=FALSE, results="hide", cache=TRUE, fig.cap="ER-to-Golgi proteins: calculations without and with length normalization.", pngquant=pngquant, timeit=timeit}
+```{r yeastplot, fig.width=6, fig.height=2.5, dpi=hidpi, out.width="100%", echo=FALSE, message=FALSE, results="hide", cache=TRUE, fig.cap="ER-to-Golgi proteins: calculations without and with length normalization.", pngquant=pngquant, timeit=timeit}
 ```
 
 ## Getting amino acid compositions

Modified: pkg/CHNOSZ/vignettes/custom_data.Rmd
===================================================================
--- pkg/CHNOSZ/vignettes/custom_data.Rmd	2023-11-29 05:45:23 UTC (rev 817)
+++ pkg/CHNOSZ/vignettes/custom_data.Rmd	2023-11-29 12:01:48 UTC (rev 818)
@@ -23,8 +23,10 @@
 pngquant <- "--speed=1 --quality=0-25"
 if (!nzchar(Sys.which("pngquant"))) pngquant <- NULL
 
-## Set dpi 20231129
-dpi <- 72
+# Set dpi 20231129
+knitr::opts_chunk$set(
+  dpi = if(nzchar(Sys.getenv("CHNOSZ_BUILD_LARGE_VIGNETTES"))) 100 else 72
+)
 ```
 
 ```{r HTML, include = FALSE}
@@ -513,7 +515,7 @@
 An ionic strength of 0.9 mol/kg is estimated for a solution with 1.8 m NaCl (use `NaCl(1.8, T = 300)`).
 `r NOTE`: because the ionic strength is non-zero, the calculations here refer to molality instead of activity of species (see [An Introduction to CHNOSZ](anintro.html#from-activity-to-molality)).
 
-```{r diagram1, message = FALSE, results = "hide", fig.width = 6, fig.height = 5, out.width = "75%", fig.align = "center", pngquant = pngquant, dpi = dpi}
+```{r diagram1, message = FALSE, results = "hide", fig.width = 6, fig.height = 5, out.width = "75%", fig.align = "center", pngquant = pngquant}
 basis(c("H+", "WO4-2", "F-", "H2O", "O2"))
 basis("F-", log10(0.1))
 iaq <- retrieve("W", c("O", "H", "F"), "aq")
@@ -542,7 +544,7 @@
 ```
 
 Now that we have the molality of `r F_` as a function of pH, we can provide it in the call to `r affinity_`.
-```{r diagram2, message = FALSE, results = "hide", results = "hide", fig.width = 6, fig.height = 5, out.width = "75%", fig.align = "center", pngquant = pngquant, dpi = dpi}
+```{r diagram2, message = FALSE, results = "hide", results = "hide", fig.width = 6, fig.height = 5, out.width = "75%", fig.align = "center", pngquant = pngquant}
 basis(c("H+", "WO4-2", "F-", "H2O", "O2"))
 iaq <- retrieve("W", c("O", "H", "F"), "aq")
 species(iaq)

Modified: pkg/CHNOSZ/vignettes/eos-regress.Rmd
===================================================================
--- pkg/CHNOSZ/vignettes/eos-regress.Rmd	2023-11-29 05:45:23 UTC (rev 817)
+++ pkg/CHNOSZ/vignettes/eos-regress.Rmd	2023-11-29 12:01:48 UTC (rev 818)
@@ -79,11 +79,8 @@
 # pngquant isn't available on R-Forge ...
 if (!nzchar(Sys.which("pngquant"))) {
   pngquant <- NULL 
-  # Save space by using a lower resolution
-  dpi <- 50
 } else {
   pngquant <- "--speed=1 --quality=0-50"
-  dpi <- 72
 }
 
 ## Colorize messages 20171031
@@ -92,6 +89,11 @@
   function(x, options) sprintf('<pre style="color:%s">%s</pre>', color, x)
 }
 knit_hooks$set(warning = color_block('magenta'), error = color_block('red'), message = color_block('blue'))
+
+# Set dpi 20231129
+knitr::opts_chunk$set(
+  dpi = if(nzchar(Sys.getenv("CHNOSZ_BUILD_LARGE_VIGNETTES"))) 72 else 50
+)
 ```
 
 
@@ -159,7 +161,7 @@
 Cplm_low$coefficients
 ```
 
-```{r EOSplot, fig.margin = TRUE, fig.cap = "Heat capacity of aqueous methane.", fig.width=3.5, fig.height=3.5, cache=TRUE, results="hide", message=FALSE, echo=FALSE, dpi=dpi, out.width=672, out.height=336, pngquant=pngquant}
+```{r EOSplot, fig.margin = TRUE, fig.cap = "Heat capacity of aqueous methane.", fig.width=3.5, fig.height=3.5, cache=TRUE, results="hide", message=FALSE, echo=FALSE, out.width=672, out.height=336, pngquant=pngquant}
 EOSplot(Cpdat, coefficients = round(Cplm_low$coefficients, 1))
 EOSplot(Cpdat, coeficients = Cplm_high, add = TRUE, lty = 3)
 PS01_data <- convert(EOScoeffs("CH4", "Cp"), "J")
@@ -239,7 +241,7 @@
 Vcoeffs_database <- convert(EOScoeffs("CH4", "V"), "J")
 ```
 
-```{r Vplot, fig.margin=TRUE, results="hide", message=FALSE, echo=FALSE, fig.width=3.5, fig.height=7, fig.cap="Volume of aqueous methane.", dpi=dpi, out.width=672, out.height=672, pngquant=pngquant}
+```{r Vplot, fig.margin=TRUE, results="hide", message=FALSE, echo=FALSE, fig.width=3.5, fig.height=7, fig.cap="Volume of aqueous methane.", out.width=672, out.height=672, pngquant=pngquant}
 par(mfrow = c(2, 1))
 # plot 1
 EOSplot(Vdat, coefficients = Vcoeffs)
@@ -278,7 +280,7 @@
 As noted above, ω for electrolytes is not a constant.
 What happens if we apply the constant-ω model anyway, knowing it's not applicable (especially at high temperature)?
 
-```{r Nalm, fig.margin=TRUE, fig.width=3.5, fig.height=3.5, fig.cap="Heat capacity of Na<sup>+</sup> (inapplicable: constant ω).", dpi=dpi, out.width=672, out.height=336, pngquant=pngquant}
+```{r Nalm, fig.margin=TRUE, fig.width=3.5, fig.height=3.5, fig.cap="Heat capacity of Na<sup>+</sup> (inapplicable: constant ω).", out.width=672, out.height=336, pngquant=pngquant}
 var <- c("invTTheta2", "TXBorn")
 Nalm <- EOSregress(Nadat, var, T.max = 600)
 EOSplot(Nadat, coefficients = Nalm$coefficients, fun.legend = NULL)
@@ -302,7 +304,7 @@
 Then, we can use an iterative procedure that refines successive guesses of `r wPrTr`.
 The convergence criterion is measured by the difference in sequential regressed values of ω.
 
-```{r Nawhile, fig.margin=TRUE, fig.width=3.5, fig.height=3.5, fig.cap="Heat capacity of Na<sup>+</sup> (variable ω).", dpi=dpi, out.width=672, out.height=336, pngquant=pngquant}
+```{r Nawhile, fig.margin=TRUE, fig.width=3.5, fig.height=3.5, fig.cap="Heat capacity of Na<sup>+</sup> (variable ω).", out.width=672, out.height=336, pngquant=pngquant}
 diff.omega <- 999
 while(abs(diff.omega) > 1) {
   Nalm1 <- EOSregress(Nadat, var1, omega.PrTr = tail(omega.guess, 1), Z = 1)
@@ -324,7 +326,7 @@
 Compared to `r Cp0`, the regression of `r V0` is very finicky.
 Given a starting guess of `r wPrTr` of 1400000 cm<sup>3</sup> bar/mol, the iteration converges on 1394890 instead of the "true" database value of 1383230 (represented by dashed line in the plot).
 
-```{r NaVolume, fig.margin=TRUE, fig.width=3.5, fig.height=3.5, fig.cap="Volume of Na<sup>+</sup> (variable ω).", results="hide", message=FALSE, echo=FALSE, dpi=dpi, out.width=672, out.height=336, pngquant=pngquant}
+```{r NaVolume, fig.margin=TRUE, fig.width=3.5, fig.height=3.5, fig.cap="Volume of Na<sup>+</sup> (variable ω).", results="hide", message=FALSE, echo=FALSE, out.width=672, out.height=336, pngquant=pngquant}
 T <- convert(seq(0, 600, 25), "K")
 P <- 1000
 prop.PT <- subcrt("Na+", T = T, P = P, grid = "T", convert = FALSE)$out[[1]]
@@ -429,7 +431,7 @@
 ```{r width80, include=FALSE}
 ```
 
-```{r subcrt_H4SiO4, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, echo=FALSE, results="hide", message=FALSE, dpi=dpi, out.width="100%", cache=TRUE, fig.cap="Comparison of H<sub>4</sub>SiO<sub>4</sub> pseudospecies.", pngquant=pngquant}
+```{r subcrt_H4SiO4, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, echo=FALSE, results="hide", message=FALSE, out.width="100%", cache=TRUE, fig.cap="Comparison of H<sub>4</sub>SiO<sub>4</sub> pseudospecies.", pngquant=pngquant}
 s1 <- subcrt(c("calc-H4SiO4", "SiO2", "H2O"), c(-1, 1, 2))
 plot(s1$out$T, s1$out$G, type = "l", ylim = c(-500, 2000),
   xlab = axis.label("T"), ylab = axis.label("DG0"))
@@ -453,7 +455,7 @@
 The following example uses the `H4SiO4` from Stefánsson (2001) to make an activity diagram for the K<sub>2</sub>O-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-H<sub>2</sub>O system.
 This is similar to the diagram on p. 361 of [Garrels and Christ, 1965](https://www.worldcat.org/oclc/517586), but is quantitatively a closer match to the diagram in the [User's Guide to PHREEQC](https://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc/html/final-75.html).
 
-```{r activity_diagram, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, echo=TRUE, results="hide", message=FALSE, dpi=dpi, out.width="100%", cache=TRUE, fig.cap="Activity diagram for K<sub>2</sub>O-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-H<sub>2</sub>O.", pngquant=pngquant}
+```{r activity_diagram, fig.margin=TRUE, fig.width=4, fig.height=4, small.mar=TRUE, echo=TRUE, results="hide", message=FALSE, out.width="100%", cache=TRUE, fig.cap="Activity diagram for K<sub>2</sub>O-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-H<sub>2</sub>O.", pngquant=pngquant}
 basis(c("Al+3", "H4SiO4", "K+", "H2O", "H+", "O2"))
 species(c("gibbsite", "muscovite", "kaolinite", "pyrophyllite", "K-feldspar"))
 a <- affinity(H4SiO4 = c(-8, 0, 300), `K+` = c(-1, 8, 300))

Modified: pkg/CHNOSZ/vignettes/equilibrium.Rmd
===================================================================
--- pkg/CHNOSZ/vignettes/equilibrium.Rmd	2023-11-29 05:45:23 UTC (rev 817)
+++ pkg/CHNOSZ/vignettes/equilibrium.Rmd	2023-11-29 12:01:48 UTC (rev 818)
@@ -64,8 +64,10 @@
 pngquant <- "--speed=1 --quality=0-25"
 if (!nzchar(Sys.which("pngquant"))) pngquant <- NULL
 
-## Set dpi 20231129
-dpi <- 72
+# Set dpi 20231129
+knitr::opts_chunk$set(
+  dpi = if(nzchar(Sys.getenv("CHNOSZ_BUILD_LARGE_VIGNETTES"))) 100 else 72
+)
 ```
 
 ```{r CHNOSZ_reset, include=FALSE}
@@ -270,7 +272,7 @@
 ```
 </div>
 
-```{r AAplot, echo = FALSE, results = "hide", message = FALSE, fig.width = 13/2, fig.height = 8.7/2, out.width = "100%", pngquant = pngquant, dpi = dpi}
+```{r AAplot, echo = FALSE, results = "hide", message = FALSE, fig.width = 13/2, fig.height = 8.7/2, out.width = "100%", pngquant = pngquant}
 ```
 
 Diagrams **A** and **B** use the *maximum affinity method*, where the reference
@@ -370,7 +372,7 @@
 ```
 </div>
 
-```{r PRplot, echo = FALSE, results = "hide", message = FALSE, fig.width = 13/2, fig.height = 8.7/2, out.width = "100%", pngquant = pngquant, dpi = dpi}
+```{r PRplot, echo = FALSE, results = "hide", message = FALSE, fig.width = 13/2, fig.height = 8.7/2, out.width = "100%", pngquant = pngquant}
 layout(t(matrix(1:12, nrow=4)), widths=c(1, 4, 4, 4), heights=c(0.7, 4, 4))
 
 ## Row 0 (column titles)
@@ -449,7 +451,7 @@
 This is like Figure 5 of @Dic08, extended to more extreme conditions.
 If you wish to reproduce the diagram from the 2008 paper more closely, uncomment the `add.OBIGT()` command.
 
-```{r ProteinSpeciation, results = "hide", message = FALSE, fig.width = 8, fig.height = 5.5, out.width = "100%", pngquant = pngquant, dpi = dpi}
+```{r ProteinSpeciation, results = "hide", message = FALSE, fig.width = 8, fig.height = 5.5, out.width = "100%", pngquant = pngquant}
 organisms <- c("METSC", "METJA", "METFE",  "METVO", "METBU",
                "HALJP", "ACEKI", "GEOSE", "BACLI", "AERSA")
 proteins <- c(rep("CSG", 6), rep("SLAP", 4))

Modified: pkg/CHNOSZ/vignettes/multi-metal.Rmd
===================================================================
--- pkg/CHNOSZ/vignettes/multi-metal.Rmd	2023-11-29 05:45:23 UTC (rev 817)
+++ pkg/CHNOSZ/vignettes/multi-metal.Rmd	2023-11-29 12:01:48 UTC (rev 818)
@@ -68,19 +68,21 @@
 ## Resolution settings
 # Change this to TRUE to make high-resolution plots
 # (default is FALSE to save time in CRAN checks)
-hires <- FALSE
+hires <- nzchar(Sys.getenv("CHNOSZ_BUILD_LARGE_VIGNETTES"))
 res1.lo <- 150
 res1.hi <- 256
-res1 <- ifelse(hires, res1.hi, res1.lo)
+res1 <- if(hires) res1.hi else res1.lo
 res2.lo <- 200
 res2.hi <- 400
-res2 <- ifelse(hires, res2.hi, res2.lo)
+res2 <- if(hires) res2.hi else res2.lo
 
-## Set dpi 20231129
-dpi <- 72
-
 ## logK with a thin space 20200627
 logK <- "log <i>K</i>"
+
+## Set dpi 20231129
+knitr::opts_chunk$set(
+  dpi = if(nzchar(Sys.getenv("CHNOSZ_BUILD_LARGE_VIGNETTES"))) 100 else 72
+)
 ```
 
 ```{r CHNOSZ_reset, include=FALSE}
@@ -93,18 +95,20 @@
 This vignette is associated with a paper that has been published in *Applied Computing and Geosciences* ([Dick, 2021](https://doi.org/10.1016/j.acags.2021.100059 "Diagrams with multiple metals in CHNOSZ")).
 Please consider citing that paper if you use the functions or diagrams described here.
 
-The plots in this vignette were made using the following resolution settings, which can be changed if desired (low resolutions are used to save time in CRAN checks):
+The plots in this vignette were made using the following resolution settings.
+Low resolutions are used for submitting the package to CRAN.
+High resolutions are used if the `CHNOSZ_BUILD_LARGE_VIGNETTES` environment variable is set.
 
 ```{r res, results = "asis", echo = FALSE}
 cat("```")
 cat("\n")
-cat(paste0(ifelse(hires, "# ", ""), "res1 <- ", res1.lo))
+cat(paste0(if(hires) "# " else "", "res1 <- ", res1.lo))
 cat("\n")
[TRUNCATED]

To get the complete diff run:
    svnlook diff /svnroot/chnosz -r 818


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