Dear BIOMODers:<div><br></div><div>I searched the list regarding these two issues but I haven't been able to find a solution.</div><div><br></div><div>I've been getting an error when trying to run the Initial.State command:</div>
<div><br></div><div><i>> lerida <- read.csv("NewLerida.csv", h=T, sep=",", dec=".")</i></div><div><i>> coordinates(lerida)=~X+Y</i></div><div><i>> proj4string(lerida) <- CRS("+init=epsg:23031")</i></div>
<div><i>> Initial.State(Response=lerida[,c(9:10)], Explanatory=lerida[,23:40], IndependentResponse=NULL, IndependentExplanatory=NULL)</i></div><div><br></div><div>The error I get is:</div><div><br></div><div><div><i>Error in `[.data.frame`(x@data, i, j, ..., drop = FALSE) : </i></div>
<div><i> undefined columns selected</i></div></div><div><br></div><div>Here's the summary of the dataset:</div><div><br></div><div><div><i>Object of class SpatialPointsDataFrame</i></div><div><i>Coordinates:</i></div>
<div><i> min max</i></div><div><i>X 277500 358500</i></div><div><i>Y 4573500 4657500</i></div><div><i>Is projected: TRUE </i></div><div><i>proj4string :</i></div><div><i>[+init=epsg:23031 +proj=utm +zone=31 +ellps=intl +units=m +no_defs]</i></div>
<div><i>Number of points: 340</i></div></div><div><br></div><div>So, I tried again but this time without specifying the coordinates and the proj4string and it worked like a charm. </div><div><br></div><div>Does any one know why this error comes up? </div>
<div><br></div><div>Also, I have been specifying the coordinates using an extra file that has X and Y and is identical to the XY columns within my dataset:</div><div><br></div><div><i>> CoorXY <- read.csv("CoorXY.csv", h=T, sep=",", dec=".")</i></div>
<div><br></div><div>Is anyone aware of a way to specify the XY coordinates (e.g. in the Models command) to point to the XY columns that are already within the dataset instead of specifying a separate coordinates file like I did above?</div>
<div><br><div class="gmail_quote">Thanks for your assistance regarding this matter.</div><div><br></div><div>Sincerely,</div><br>-- <br>__________________________________<br>Hakim Abdi<br>Erasmus Mundus Master's Programme in<br>
Geospatial Technologies<br><br>Institut für Geoinformatik<br>Universität Münster<br>32U 5755408.16mN, 404463.35mE<br><a href="http://ifgi.uni-muenster.de" target="_blank">ifgi.uni-muenster.de</a><br><br>Instituto Superior de Estatística e Gestão de Informação<br>
Universidade Nova de Lisboa<br>29S 4287095.5mN, 486099.7mE<br><a href="http://www.isegi.unl.pt" target="_blank">www.isegi.unl.pt</a><br><br><a href="http://www.geospatialtechnologist.com" target="_blank">www.geospatialtechnologist.com</a><br>
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