From julia.krejci at chello.at Wed Feb 11 14:53:07 2015 From: julia.krejci at chello.at (Julia Krejci) Date: Wed, 11 Feb 2015 14:53:07 +0100 Subject: [tlocoh-info] Hull metrics Message-ID: <001501d04602$10e44a60$32acdf20$@chello.at> Dear Mailinglist, I'm currently trying to compare hull metrics (nsv and mnlv) of several individuals and several sites. I want to know how long and how often individual A visited site 1 and 2 and the same for individual B. Is there a way to get more accurate values for specific sites than I can receive from the images? Currently I have just plotted the hpp with the respective colour code and try to compare colours but of course that's not very accurate, also because the colours only represent ranges of values (like, yellow is 1 - 12, orange is 12 - 24 and so on). Thank you for every advice! Best wishes, Julia -------------- next part -------------- An HTML attachment was scrubbed... URL: From lyons.andy at gmail.com Wed Feb 11 19:32:56 2015 From: lyons.andy at gmail.com (Andy Lyons) Date: Wed, 11 Feb 2015 10:32:56 -0800 Subject: [tlocoh-info] Hull metrics In-Reply-To: <9E21A920-6F94-43DA-BFB7-9CDFA922604B@berkeley.edu> References: <001501d04602$10e44a60$32acdf20$@chello.at> <9E21A920-6F94-43DA-BFB7-9CDFA922604B@berkeley.edu> Message-ID: <54DBA058.90102@gmail.com> Hi Julia, That's a good question. It seems you need a way to identify hulls that belong to specific sites, and save the site location as an ancillary variable (which can then serve as a hull metric). There isn't a function currently in the package that can classify points or hulls based on their location in space, but we could develop one because I think this would have general utility. How specifically would you want to assign points / hulls to sites? One option for defining a site would be with a polygon, either by drawing one on the plot window or bringing in a shapefile. Another option would be defining a site based on distance from a given location (i.e., a circle). After defining the site, would you want to say that any point (and thus the hull for that point) that falls within the site? Or would you only want hulls whose entire area falls within the site? Comment from other people welcome also. Thanks. Andy > >> On Feb 11, 2015, at 5:53 AM, Julia Krejci > > wrote: >> >> Dear Mailinglist, >> >> I?m currently trying to compare hull metrics (nsv and mnlv) of >> several individuals and several sites. I want to know how long and >> how often individual A visited site 1 and 2 and the same for >> individual B. Is there a way to get more accurate values for specific >> sites than I can receive from the images? Currently I have just >> plotted the hpp with the respective colour code and try to compare >> colours but of course that?s not very accurate, also because the >> colours only represent ranges of values (like, yellow is 1 ? 12, >> orange is 12 ? 24 and so on). >> >> Thank you for every advice! >> >> Best wishes, >> >> Julia >> >> _______________________________________________ >> Tlocoh-info mailing list >> Tlocoh-info at lists.r-forge.r-project.org >> >> http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/tlocoh-info > -------------- next part -------------- An HTML attachment was scrubbed... URL: From ekalumanga at yahoo.com Mon Feb 16 03:04:23 2015 From: ekalumanga at yahoo.com (elikana kalumanga) Date: Mon, 16 Feb 2015 02:04:23 +0000 (UTC) Subject: [tlocoh-info] Hull metrics In-Reply-To: <54DBA058.90102@gmail.com> References: <54DBA058.90102@gmail.com> Message-ID: <271837679.3882918.1424052263795.JavaMail.yahoo@mail.yahoo.com> ?Hi people, I am at the?very initial stages of learning tlocoh?so that I can?estimate home ranges and calculate revisitation rate of elephants. While creating?an xyt.lxy object, I constantly receive error message; Error in min(xy[, 1]) : invalid 'type' (S4) of argument. I will be happy to know what is going wrong with my code? Thanks, and here are my codes:? > head(FRAcoordinates) ???????? x?????? y 0 386924.1 9369662 1 387761.6 9369931 > head(as.character(FRA$Date_)) [1] "2012-08-31 20:09:00.000" "2012-08-31 16:09:00.000" "2012-08-31 12:09:00.000" [4] "2012-08-31 8:10:00.000"? "2012-08-31 4:09:00.000"? "2012-08-31 0:11:00.000" > FRA.localtime[1:3] [1] "2012-08-31 23:09:00 EAT" "2012-08-31 19:09:00 EAT" "2012-08-31 15:09:00 EAT" > FRA.lxy <- xyt.lxy(xy=FRA, dt=FRA.localtime, id="FRA",proj4string=CRS("+proj=utm +south +zone=36 +ellps=WGS84")) Error in min(xy[, 1]) : invalid 'type' (S4) of argument /ElikanaUniversity of Dar es Salaam-Tanzania On Wednesday, February 11, 2015 7:33 PM, Andy Lyons wrote: Hi Julia, That's a good question. It seems you need a way to identify hulls that belong to specific sites, and save the site location as an ancillary variable (which can then serve as a hull metric). There isn't a function currently in the package that can classify points or hulls based on their location in space, but we could develop one because I think this would have general utility. How specifically would you want to assign points / hulls to sites? One option for defining a site would be with a polygon, either by drawing one on the plot window or bringing in a shapefile. Another option would be defining a site based on distance from a given location (i.e., a circle). After defining the site, would you want to say that any point (and thus the hull for that point) that falls within the site? Or would you only want hulls whose entire area falls within the site? Comment from other people welcome also. Thanks. Andy On Feb 11, 2015, at 5:53 AM, Julia Krejci wrote: Dear Mailinglist, I?m currently trying to compare hull metrics (nsv and mnlv) of several individuals and several sites. I want to know how long and how often individual A visited site 1 and 2 and the same for individual B. Is there a way to get more accurate values for specific sites than I can receive from the images? Currently I have just plotted the hpp with the respective colour code and try to compare colours but of course that?s not very accurate, also because the colours only represent ranges of values (like, yellow is 1 ? 12, orange is 12 ? 24 and so on).? Thank you for every advice! Best wishes,? Julia? _______________________________________________ Tlocoh-info mailing list Tlocoh-info at lists.r-forge.r-project.org http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/tlocoh-info _______________________________________________ Tlocoh-info mailing list Tlocoh-info at lists.r-forge.r-project.org http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/tlocoh-info -------------- next part -------------- An HTML attachment was scrubbed... URL: From lyons.andy at gmail.com Mon Feb 16 04:26:01 2015 From: lyons.andy at gmail.com (Andy Lyons) Date: Sun, 15 Feb 2015 19:26:01 -0800 Subject: [tlocoh-info] Error message creating locoh-xy object In-Reply-To: <271837679.3882918.1424052263795.JavaMail.yahoo@mail.yahoo.com> References: <54DBA058.90102@gmail.com> <271837679.3882918.1424052263795.JavaMail.yahoo@mail.yahoo.com> Message-ID: <54E16349.3020206@gmail.com> Hi Elikana, Based on your code, it would seem the coordinates for your individuals are saved in FRAcoordinates. Hence try: FRA.lxy <- xyt.lxy(xy=FRAcoordinates, dt=FRA.localtime, id="FRA",proj4string=CRS("+proj=utm +south +zone=36 +ellps=WGS84")) If you still get the error message, email me back and I'll help you diagnose the error. Cheers, Andy On 2/15/2015 6:04 PM, elikana kalumanga wrote: > Hi people, > > I am at the very initial stages of learning tlocoh so that I > can estimate home ranges and calculate revisitation rate of elephants. > While creating an xyt.lxy object, I constantly receive error message; > *Error in min(xy[, 1]) : invalid 'type' (S4) of argument. *I will be > happy to know what is going wrong with my code? > > Thanks, and here are my codes: > > > > head(FRAcoordinates) > x y > 0 386924.1 9369662 > 1 387761.6 9369931 > > > head(as.character(FRA$Date_)) > [1] "2012-08-31 20:09:00.000" "2012-08-31 16:09:00.000" "2012-08-31 > 12:09:00.000" > [4] "2012-08-31 8:10:00.000" "2012-08-31 4:09:00.000" "2012-08-31 > 0:11:00.000" > > > FRA.localtime[1:3] > [1] "2012-08-31 23:09:00 EAT" "2012-08-31 19:09:00 EAT" "2012-08-31 > 15:09:00 EAT" > > >FRA.lxy <- xyt.lxy(xy=FRA, dt=FRA.localtime, > id="FRA",proj4string=CRS("+proj=utm +south +zone=36 +ellps=WGS84")) > *Error in min(xy[, 1]) : invalid 'type' (S4) of argument > * > > /Elikana > University of Dar es Salaam-Tanzania > > > On Wednesday, February 11, 2015 7:33 PM, Andy Lyons > wrote: > > > Hi Julia, > > That's a good question. It seems you need a way to identify hulls that > belong to specific sites, and save the site location as an ancillary > variable (which can then serve as a hull metric). There isn't a > function currently in the package that can classify points or hulls > based on their location in space, but we could develop one because I > think this would have general utility. > > How specifically would you want to assign points / hulls to sites? One > option for defining a site would be with a polygon, either by drawing > one on the plot window or bringing in a shapefile. Another option > would be defining a site based on distance from a given location > (i.e., a circle). After defining the site, would you want to say that > any point (and thus the hull for that point) that falls within the > site? Or would you only want hulls whose entire area falls within the > site? > > Comment from other people welcome also. > > Thanks. > > Andy > > >> >>> On Feb 11, 2015, at 5:53 AM, Julia Krejci >> > wrote: >>> >>> Dear Mailinglist, >>> I?m currently trying to compare hull metrics (nsv and mnlv) of >>> several individuals and several sites. I want to know how long and >>> how often individual A visited site 1 and 2 and the same for >>> individual B. Is there a way to get more accurate values for >>> specific sites than I can receive from the images? Currently I have >>> just plotted the hpp with the respective colour code and try to >>> compare colours but of course that?s not very accurate, also because >>> the colours only represent ranges of values (like, yellow is 1 ? 12, >>> orange is 12 ? 24 and so on). >>> Thank you for every advice! >>> Best wishes, >>> Julia >>> _______________________________________________ >>> Tlocoh-info mailing list >>> Tlocoh-info at lists.r-forge.r-project.org >>> >>> http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/tlocoh-info >> > > > _______________________________________________ > Tlocoh-info mailing list > Tlocoh-info at lists.r-forge.r-project.org > > http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/tlocoh-info > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From julia.krejci at chello.at Mon Feb 16 16:59:29 2015 From: julia.krejci at chello.at (Julia Krejci) Date: Mon, 16 Feb 2015 16:59:29 +0100 Subject: [tlocoh-info] Hull metrics In-Reply-To: <54DBA058.90102@gmail.com> References: <001501d04602$10e44a60$32acdf20$@chello.at> <9E21A920-6F94-43DA-BFB7-9CDFA922604B@berkeley.edu> <54DBA058.90102@gmail.com> Message-ID: <002a01d04a01$8c533370$a4f99a50$@chello.at> Hi Andy, thank you (and everyone else) for your quick reply! I guess it would be easier and more flexible to be able to draw a polygon around a specific location. And every point (and its hull) which lies within the polygon counts for the site. But maybe it would be more accurate if you say, only points whose hulls fall entirely (or for example >50%) to the polygon are taken into account. I think it would be an interesting function, I for myself would love to have something like that because the locations of my animals are very clustered. Best wishes, Julia Von: Andy Lyons [mailto:lyons.andy at gmail.com] Gesendet: Mittwoch, 11. Februar 2015 19:33 An: Julia Krejci Cc: tlocoh-info at lists.r-forge.r-project.org Betreff: Re: [tlocoh-info] Hull metrics Hi Julia, That's a good question. It seems you need a way to identify hulls that belong to specific sites, and save the site location as an ancillary variable (which can then serve as a hull metric). There isn't a function currently in the package that can classify points or hulls based on their location in space, but we could develop one because I think this would have general utility. How specifically would you want to assign points / hulls to sites? One option for defining a site would be with a polygon, either by drawing one on the plot window or bringing in a shapefile. Another option would be defining a site based on distance from a given location (i.e., a circle). After defining the site, would you want to say that any point (and thus the hull for that point) that falls within the site? Or would you only want hulls whose entire area falls within the site? Comment from other people welcome also. Thanks. Andy On Feb 11, 2015, at 5:53 AM, Julia Krejci wrote: Dear Mailinglist, I?m currently trying to compare hull metrics (nsv and mnlv) of several individuals and several sites. I want to know how long and how often individual A visited site 1 and 2 and the same for individual B. Is there a way to get more accurate values for specific sites than I can receive from the images? Currently I have just plotted the hpp with the respective colour code and try to compare colours but of course that?s not very accurate, also because the colours only represent ranges of values (like, yellow is 1 ? 12, orange is 12 ? 24 and so on). Thank you for every advice! Best wishes, Julia _______________________________________________ Tlocoh-info mailing list Tlocoh-info at lists.r-forge.r-project.org http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/tlocoh-info -------------- next part -------------- An HTML attachment was scrubbed... URL: From ekalumanga at yahoo.com Tue Feb 17 01:20:34 2015 From: ekalumanga at yahoo.com (elikana kalumanga) Date: Tue, 17 Feb 2015 00:20:34 +0000 (UTC) Subject: [tlocoh-info] Error message creating locoh-xy object In-Reply-To: <54E16349.3020206@gmail.com> References: <54E16349.3020206@gmail.com> Message-ID: <2042130066.4763378.1424132434180.JavaMail.yahoo@mail.yahoo.com> Many thanks, Andy Immediately after changing the x-y (FRAcoordinates) every step was so smooth until I was stuck in making the very last animation. Congrats, for putting up the Tlocoh package. The revisitation rate calculated and shown in tlocoh is extremely helpful in focusing elephant conservation efforts. /Elikana On Monday, February 16, 2015 4:26 AM, Andy Lyons wrote: Hi Elikana, Based on your code, it would seem the coordinates for your individuals are saved in FRAcoordinates. Hence try: FRA.lxy <- xyt.lxy(xy=FRAcoordinates, dt=FRA.localtime, id="FRA",proj4string=CRS("+proj=utm +south +zone=36 +ellps=WGS84")) If you still get the error message, email me back and I'll help you diagnose the error. Cheers, Andy On 2/15/2015 6:04 PM, elikana kalumanga wrote: ?Hi people, I am at the?very initial stages of learning tlocoh?so that I can?estimate home ranges and calculate revisitation rate of elephants. While creating?an xyt.lxy object, I constantly receive error message; Error in min(xy[, 1]) : invalid 'type' (S4) of argument. I will be happy to know what is going wrong with my code? Thanks, and here are my codes:? > head(FRAcoordinates) ???????? x?????? y 0 386924.1 9369662 1 387761.6 9369931 > head(as.character(FRA$Date_)) [1] "2012-08-31 20:09:00.000" "2012-08-31 16:09:00.000" "2012-08-31 12:09:00.000" [4] "2012-08-31 8:10:00.000"? "2012-08-31 4:09:00.000"? "2012-08-31 0:11:00.000" > FRA.localtime[1:3] [1] "2012-08-31 23:09:00 EAT" "2012-08-31 19:09:00 EAT" "2012-08-31 15:09:00 EAT" > FRA.lxy <- xyt.lxy(xy=FRA, dt=FRA.localtime, id="FRA",proj4string=CRS("+proj=utm +south +zone=36 +ellps=WGS84")) Error in min(xy[, 1]) : invalid 'type' (S4) of argument /Elikana University of Dar es Salaam-Tanzania On Wednesday, February 11, 2015 7:33 PM, Andy Lyons wrote: Hi Julia, That's a good question. It seems you need a way to identify hulls that belong to specific sites, and save the site location as an ancillary variable (which can then serve as a hull metric). There isn't a function currently in the package that can classify points or hulls based on their location in space, but we could develop one because I think this would have general utility. How specifically would you want to assign points / hulls to sites? One option for defining a site would be with a polygon, either by drawing one on the plot window or bringing in a shapefile. Another option would be defining a site based on distance from a given location (i.e., a circle). After defining the site, would you want to say that any point (and thus the hull for that point) that falls within the site? Or would you only want hulls whose entire area falls within the site? Comment from other people welcome also. Thanks. Andy On Feb 11, 2015, at 5:53 AM, Julia Krejci wrote: Dear Mailinglist, I?m currently trying to compare hull metrics (nsv and mnlv) of several individuals and several sites. I want to know how long and how often individual A visited site 1 and 2 and the same for individual B. Is there a way to get more accurate values for specific sites than I can receive from the images? Currently I have just plotted the hpp with the respective colour code and try to compare colours but of course that?s not very accurate, also because the colours only represent ranges of values (like, yellow is 1 ? 12, orange is 12 ? 24 and so on).? Thank you for every advice! Best wishes,? Julia? _______________________________________________ Tlocoh-info mailing list Tlocoh-info at lists.r-forge.r-project.org http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/tlocoh-info _______________________________________________ Tlocoh-info mailing list Tlocoh-info at lists.r-forge.r-project.org http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/tlocoh-info -------------- next part -------------- An HTML attachment was scrubbed... URL: From ekalumanga at yahoo.com Tue Feb 24 03:16:41 2015 From: ekalumanga at yahoo.com (elikana kalumanga) Date: Tue, 24 Feb 2015 02:16:41 +0000 (UTC) Subject: [tlocoh-info] Reporting home ranges (wet and dry seasons combined) and seasonal home ranges Message-ID: <451438801.2473501.1424744201036.JavaMail.yahoo@mail.yahoo.com> Hi Tlocoh users,?I have calculated thehome ranges of six different animals using HR_area<-isopleths(K.lhs) HR_area[[1]]@data? and got the results as?shown below. a) Is itallowable to present?results as I have done in?Table1??b)?Is it allowable to?partition the lxy object into seasons(Wet and Dry) and calculate seasonal home ranges using the same?k and svalues? k=15, s=0.01?????Thanks you,?/Elikana?A: Calculating the home ranges (50% core and 95% HR) for Kiso.level??????area edge.len? nep?????? ptp??hm.val num.hulls1?????0.10?? 70269838 108903.2? 306 0.1039755?9151933??????? 762????? 0.25?202560380 241182.6? 751 0.255181813458959?????? 1613????? 0.50?411476203 396289.0 1478 0.5022086 17707306??????2964????? 0.75?795190800 498162.6 2223 0.7553517 25729873??????5785????? 0.95 1930117958593033.8 2800 0.9514101 64256706????? 1873?Table 1: Number of fixes and estimated home ranges from the lhs | Name | Number of fixes (GPS points) | Duplicate points | Number of days/dates | Core area (km2) (50%) | Home range Km2 (95%) | | K | 2943 ? | 0 | 743.9 2012-08-15 2014-08-29 | 411.48km? | 1930.1km? | ?? -------------- next part -------------- An HTML attachment was scrubbed... URL: From lyons.andy at gmail.com Wed Feb 25 17:41:59 2015 From: lyons.andy at gmail.com (Andy Lyons) Date: Wed, 25 Feb 2015 08:41:59 -0800 Subject: [tlocoh-info] Reporting home ranges (wet and dry seasons combined) and seasonal home ranges In-Reply-To: <451438801.2473501.1424744201036.JavaMail.yahoo@mail.yahoo.com> References: <451438801.2473501.1424744201036.JavaMail.yahoo@mail.yahoo.com> Message-ID: <54EDFB57.30202@gmail.com> Hi Elikana, Thanks for your query. See my comments below, and let us know if you have any other questions. Andy On 2/23/2015 6:16 PM, elikana kalumanga wrote: > Hi Tlocoh users, > I have calculated the home ranges of six different animals using > HR_area<-isopleths(K.lhs) > HR_area[[1]]@data and got the results as shown below. a) Is it > allowable to present results as I have done in Table 1? I'm not sure what you mean 'allowable', but your table looks fine. Isopleth area is given in map units squared, so if your map units are meters then dividing by 10^6 gives you km2 (as you've done). A reader may want to know more what 'duplicate points' means. because two fixes at the same location are fine as long as they have different time stamps. > b) Is it allowable to partition the lxy object into seasons (Wet and > Dry) and calculate seasonal home ranges using the same k and s values? > k=15, s=0.01 When you're working with subsets of your data from the same individual, using the same parameter values (k and s) is pretty standard, and certainly defensible in terms of comparing apples to apples. This presumes that the movement pattern and sampling intervals in the wet and dry seasons are not dramatically different. If on the other hand, for example, there are many more spatial outliers in the dry season (because the animal was wondering far and yonder in search of water sources), then the same value of k that did a nice job modeling space use in the wet season could potentially result in large ispoleths in the dry season that include large areas where the animal never was (in which case you might to switch to the 'a' method which is generally more robust to different geometric distributions of points). Hence inspecting the isopleth-area curves and isopleth maps for a reality check is still worth doing, but if they are not too dissimilar then using the same parameter values would be a good choice. > > Thanks you, > /Elikana > A: Calculating the home ranges (50% core and 95% HR) for K > iso.level area edge.len nep ptp hm.val num.hulls > 1 0.10 70269838 108903.2 306 0.1039755 9151933 76 > 2 0.25 202560380 241182.6 751 0.2551818 13458959 161 > 3 0.50 411476203 396289.0 1478 0.5022086 17707306 296 > 4 0.75 795190800 498162.6 2223 0.7553517 25729873 578 > 5 0.95 1930117958 593033.8 2800 0.9514101 64256706 1873 > Table 1: Number of fixes and estimated home ranges from the lhs > Name > > Number of fixes (GPS points) > > Duplicate points > > Number of days/dates > > Core area (km^2 ) > (50%) > > Home range > Km^2 > (95%) > K > > 2943 > > 0 > > 743.9 > 2012-08-15 2014-08-29 > > 411.48km? > > 1930.1km? > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: From batsncats at gmail.com Wed Feb 25 18:18:33 2015 From: batsncats at gmail.com (Bruce Miller) Date: Wed, 25 Feb 2015 09:18:33 -0800 Subject: [tlocoh-info] Query on radio telemetry data Message-ID: <54EE03E9.4070707@gmail.com> Hi all, I tried unsuccessfully to use LOAS to derive predicted locations of radio tagged bats. I have observer locations (X-Y) and compass bearings (azimuths) to the signals and need to derive estimated locations of each transmitter. The R based version of LOAS was allegedly to be ready last summer (2014) but is not yet available. How can I best derive these points and export the points and potential confidence ellipses either as shape files or even locations as simple X-Y locations so I can map the bearings and estimated locations in a GIS? I need to re-read the tlocoh documentation, but does this package provide this type of animal movement analyses? I am in the field and w/o my full GIS software on my office workstation. Data includes 16 nights of ground tracking teams and one plane with 2 receivers and antennas flying overhead. The Lotek receivers export the data files as logged TX freq. and positions but only as WGS84 decimal degrees and the rest of the data is based on UTM zone 11S northing and easting, as well as the planes GPS track for flights. All include date-time stamps so linking in my master database is not an issue. Any suggestions welcome. Bruce From ekalumanga at yahoo.com Thu Feb 26 00:32:14 2015 From: ekalumanga at yahoo.com (elikana kalumanga) Date: Wed, 25 Feb 2015 23:32:14 +0000 (UTC) Subject: [tlocoh-info] Reporting home ranges (wet and dry seasons combined) and seasonal home ranges In-Reply-To: <54EDFB57.30202@gmail.com> References: <54EDFB57.30202@gmail.com> Message-ID: <1636196433.135016.1424907134303.JavaMail.yahoo@mail.yahoo.com> Many thanks, Andy. I will try?to use k and a methods and compare the results. ? Elikana On Wednesday, February 25, 2015 5:41 PM, Andy Lyons wrote: Hi Elikana, Thanks for your query. See my comments below, and let us know if you have any other questions. Andy On 2/23/2015 6:16 PM, elikana kalumanga wrote: Hi Tlocoh users, ? I have calculated the home ranges of six different animals using HR_area<-isopleths(K.lhs) HR_area[[1]]@data? and got the results as?shown below. a) Is it allowable to present?results as I have done in?Table 1? I'm not sure what you mean 'allowable', but your table looks fine. Isopleth area is given in map units squared, so if your map units are meters then dividing by 10^6 gives you km2 (as you've done). A reader may want to know more what 'duplicate points' means. because two fixes at the same location are fine as long as they have different time stamps. b)?Is it allowable to?partition the lxy object into seasons (Wet and Dry) and calculate seasonal home ranges using the same?k and s values? k=15, s=0.01 When you're working with subsets of your data from the same individual, using the same parameter values (k and s) is pretty standard, and certainly defensible in terms of comparing apples to apples. This presumes that the movement pattern and sampling intervals in the wet and dry seasons are not dramatically different. If on the other hand, for example, there are many more spatial outliers in the dry season (because the animal was wondering far and yonder in search of water sources), then the same value of k that did a nice job modeling space use in the wet season could potentially result in large ispoleths in the dry season that include large areas where the animal never was (in which case you might to switch to the 'a' method which is generally more robust to different geometric distributions of points). Hence inspecting the isopleth-area curves and isopleth maps for a reality check is still worth doing, but if they are not too dissimilar then using the same parameter values would be a good choice.? ?? ? Thanks you, ? /Elikana ? A: Calculating the home ranges (50% core and 95% HR) for K iso.level?????? area edge.len? nep?????? ptp?? hm.val num.hulls 1????? 0.10?? 70269838 108903.2? 306 0.1039755? 9151933??????? 76 2????? 0.25? 202560380 241182.6? 751 0.2551818 13458959?????? 161 3????? 0.50? 411476203 396289.0 1478 0.5022086 17707306?????? 296 4????? 0.75? 795190800 498162.6 2223 0.7553517 25729873?????? 578 5????? 0.95 1930117958 593033.8 2800 0.9514101 64256706????? 1873 ? Table 1: Number of fixes and estimated home ranges from the lhs | Name | Number of fixes (GPS points) | Duplicate points | Number of days/dates | Core area (km2) (50%) | Home range Km2 (95%) | | K | 2943 ? | 0 | 743.9 2012-08-15 2014-08-29 | 411.48km? | 1930.1km? | ? ? -------------- next part -------------- An HTML attachment was scrubbed... URL: