Displaying 7 results from an estimated 7 matches for "gdistanc".
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gdistance
2018 Feb 06
1
gdistance::shortestPath throws error "not a symmetric matrix"
Hi,
Calling
gdistance::shortestPath
gives me the error
Error in asMethod(object) :
not a symmetric matrix; consider forceSymmetric() or symmpart()
The output of dput(.traceback()) is
pairlist("stop(\"not a symmetric matrix; consider forceSymmetric() or symmpart()\")",
"asMethod(o...
2018 Feb 14
2
long vectors not supported yet
Hi,
I am running R 3.3.3 and getting the following error:
Error in add_edges(res, edges = t(as.matrix(el[, 1:2])), attr = weight) :
long vectors not supported yet: ../../src/include/Rinlinedfuns.h:138
when passing a 13 GB TransitionLayer object to shortestPath from the
package 'gdistance'.
The error, albeit in a different context, is discussed here:
https://github.com/tidyverse/readr/issues/309
https://github.com/tidyverse/readr/pull/433
However it is not clear to me quite what the fix was and what kind of
limit may still exist in subsequent R versions.
Is this a gener...
2018 Feb 14
0
long vectors not supported yet
...R 3.3.3 and getting the following error:
>
>Error in add_edges(res, edges = t(as.matrix(el[, 1:2])), attr = weight)
>:
> long vectors not supported yet: ../../src/include/Rinlinedfuns.h:138
>
>when passing a 13 GB TransitionLayer object to shortestPath from the
>package 'gdistance'.
>
>The error, albeit in a different context, is discussed here:
>
> https://github.com/tidyverse/readr/issues/309
> https://github.com/tidyverse/readr/pull/433
>
>However it is not clear to me quite what the fix was and what kind of
>limit may still exist in subsequ...
2018 Feb 15
1
long vectors not supported yet
...rror:
>>
>> Error in add_edges(res, edges = t(as.matrix(el[, 1:2])), attr = weight)
>> :
>> long vectors not supported yet: ../../src/include/Rinlinedfuns.h:138
>>
>> when passing a 13 GB TransitionLayer object to shortestPath from the
>> package 'gdistance'.
>>
>> The error, albeit in a different context, is discussed here:
>>
>> https://github.com/tidyverse/readr/issues/309
>> https://github.com/tidyverse/readr/pull/433
>>
>> However it is not clear to me quite what the fix was and what kind of
&...
2011 Jul 14
1
calculating distance inland from coastline
Hi All,
Does anybody know of any existing functions that will calculate distance
inland from a coastline?
It's possible to test if a lon,lat location is land or sea using
map.where(), but I need to add a buffer to this of say 2km, to allow for
points that are just on the coast, and below the resolution of the
worldHires database.
I'm working with a marine mammal satellite telemetry
2012 Feb 23
0
resistanceDistance representation
Dear all,
i'm using gdistance to model animal movement across landscape.
I have imported 11 rasters with roads, freeways, slope, use-of-land, lakes
(...) after recoding them with GRASS with a HSI value ranging from 1 to 4.
I've assigned zero to the NAs and then transformed all the rasters in
TransitionLayers (function=mean...
2012 May 20
1
CRAN (and crantastic) updates this week
CRAN (and crantastic) updates this week
New packages
------------
* bisectr (0.0.2)
Maintainer: Winston Chang
Author(s): Winston Chang <winston at stdout.org>
License: GPL-2
http://crantastic.org/packages/bisectr
Tools to find bad commits with git bisect
* CUMP (1.0)
Maintainer: Xuan Liu
Author(s): Xuan Liu <liuxuan at bu.edu> and Qiong Yang <qyang at bu.edu>