coordinates columns

[Claire de Walque]

Hello Dr Shawn. I'm learning to use Biodiverse for my thesis about the Spatial Phylogenetics of Amazonian primates. I struggle to download my BasaData into biodiverse. I can't download shapefile, because I receive this kind of error message "Malformed UTF-8 character （fatal） at <embedded>/Carp.pm line 456, …". I checked if the shapefile had all the components (as .dbf .cpg) and I convert it through R to fix the encoding (UTF-8). It still doesn't work. But this ins't the main issue since I can still download a .csv. 

My main problem is that my data doesn't have a x and an y columns. Indeed, I just have a columns which contains coordinates of polygons, and it looks like this (for just one species) : 

MULTIPOLYGON (((-69.8172 -6.778864, -69.8203 -6.819464, -69.8237 -6.830964, -69.8306 -6.854764, -69.8327 -6.861964, -69.8401 -6.886064, -69.8421 -6.894264, -69.8427 -6.909764, -69.8436 -6.931364, -69.8446 -6.961964, -69.8453 -6.972264, -69.8462 -6.974564, -69.8505 -6.982264, -69.8733 -7.025264, -69.8772 -7.039864, -69.8858 -7.072064, -69.9089 -7.084464, -69.9666 -7.116364, -69.9765 -7.116564, -69.9948 -7.118564, -70.013 -7.120364, -70.0293 -7.121964, -70.0513 -7.141064, -70.0761 -7.162564, -70.1055 -7.189164, -70.1126 -7.197764, -70.1231 -7.204264, -70.144 -7.220364, -70.154 -7.228064, -70.1674 -7.235964, -70.1749 -7.241964, -70.1915 -7.252964, -70.2023 -7.265964, -70.2115 -7.276964, -70.2227 -7.290364, ... 

So if I transform it into x and y columns, I will have hundreds of rows for each species, and I will just have coordinates for the outside of the polygones, so I won't have distribution for the inside of each polygone. What do you recommend? Biodiverse is able to understand polygons data? 

I really thank you in advance for your answer! 

Claire de Walque 

[Shawn Laffan]

Hello Claire,

Biodiverse will import polygons (once I fix the proj.db error you reported). 

Some of the options are described in this post:  https://biodiverse-analysis-software.blogspot.com/2018/12/import-polygon-and-polyline-data.html

In terms of the UTF8 error, are you able to send me a copy of the shapefile you are using?  That will allow me to replicate it locally.

Regards,
Shawn.

On 25/02/2025 01:39, Claire de Walque wrote:

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