Thanks Hernan! I will try to find out what the problem is with your shape file.
Btw is the code for reading/writing dbf files already available on github? Hans From: Hernán Morales Durand <hernan.mora...@gmail.com> Sent: vrijdag 5 juni 2020 0:25 To: Any question about pharo is welcome <pharo-users@lists.pharo.org> Subject: Re: [Pharo-users] GIS support for Pharo Hi Hans, El jue., 4 jun. 2020 a las 6:07, Baveco, Hans (<hans.bav...@wur.nl<mailto:hans.bav...@wur.nl>>) escribió: Would be an interesting project.. An old link to possibly still useful code: http://wiki.squeak.org/squeak/3317 Btw the shapefile support, from the ESRI spec, was done by me and is still available on http://www.squeaksource.com/@CUT95k_uXmPU4uXY/HCmgtrop. Thank you for the clarification (and actually sharing your work with ESRI files!) I added proper credits in the Github forked repo : https://github.com/hernanmd/Shapes I use it daily. I may have some fixes/additions, but in general the code as provided works well (I suppose the code at smalltalkhub is still mostly the same). Some shapefile formats are still missing, mostly because I never encountered them.. You mean some types are missing? Because I get this error when I try to read some SHP files: "Types > 20 are not yet accounted for" I wrote this script to reproduce: | shpE legend urlRoot urlESRIFilePrefix urlESRIFileShp urlPath response fileRef | " Download Shapefile resources " urlRoot := 'https://github.com/nvkelso/natural-earth-vector/blob/master/110m_cultural/'. urlESRIFilePrefix := 'ne_110m_populated_places'. urlESRIFileShp := urlESRIFilePrefix , '.shp'. urlPath := urlRoot , urlESRIFilePrefix. #('.shx' '.dbf' '.shp') do: [ : ext | | url | url := (urlPath , ext , '?raw=true') asZnUrl. (response := ZnEasy get: url) isSuccess ifFalse: [ self error: 'Cannot download file' ]. fileRef := FileSystem disk workingDirectory / (urlESRIFilePrefix , ext). fileRef writeStreamDo: [ : stream | stream nextPutAll: ((ZnByteEncoder newForEncoding: 'koi8r') decodeBytes: response contents ) ] ]. Once downloaded: | urlESRIFilePrefix urlESRIFileShp shpE | urlESRIFilePrefix := 'ne_110m_populated_places'. urlESRIFileShp := urlESRIFilePrefix , '.shp'. " Load and display it in Morphic " shpE := ShapeEnsemble fromFile: urlESRIFileShp. Maybe it's related with the fact they are encoded as koi8r? I checked with Zinc downloading first from the browser: | shpFile | shpFile := 'ne_110m_admin_0_countries.shp' asFileReference. [ shpFile binaryReadStreamDo: [ : in | (ZnCharacterEncoder detectEncoding: in upToEnd) identifier ] ] on: ZnCharacterEncodingError do: [ nil ]. Cheers, Hernán To read a complete shapefile one also needs to read dbf files. This was another substantial effort http://www.squeaksource.com/@Y4HhnL90iyA2TmAb/X0sPqshM; luckily there was an older implementation.available to build upon. Not sure whether nowadays there are other ways to read/write files old DBASE format files... Cheers, Hans Baveco From: Serge Stinckwich <serge.stinckw...@gmail.com<mailto:serge.stinckw...@gmail.com>> Sent: donderdag 4 juni 2020 5:32 To: Any question about pharo is welcome <pharo-users@lists.pharo.org<mailto:pharo-users@lists.pharo.org>> Subject: [Pharo-users] GIS support for Pharo Dear all, there was already some discussion in the list about GIS support for Pharo previously. Working on CORMAS multi-agent simulation platform: https://github.com/cormas/cormas some developers feel the need to have more GIS support for Pharo. I know of existing GIS software: - GeoJSON by Zweidenker: https://github.com/zweidenker/GeoJSON - ESRI ascii raster, done by Stephane recently: https://github.com/Ducasse/ESRI-ASCII-Raster - shapefile support by Hernan: http://smalltalkhub.com/#!/~hernan/Shapes (to be moved to github) - I found this project also: http://www.squeaksource.com/gekon.html I know that Etienne Delay is also interested by GIS support and propose to implement OpenGIS model support: https://github.com/cormas/cormas/issues/139 Can we try to unite and maybe create a pharo-GIS organization on github to federate our efforts? Cheers, -- Serge Stinckwic h https://twitter.com/SergeStinckwich
