search

FieldStudiesCouncil / QGIS-Biological-Recording-Tools

QGIS plugin for biological recorders. Created with the FSC Tomorrow's Biodiversity project.
GNU General Public License v3.0
10 stars 4 forks source link

POSSIBILITY TO SELECT RECORDS FROM MULTIPLE LAYERS BY RADIUS #36

Closed bwmoths closed 5 years ago

bwmoths commented 5 years ago

Is it possible to select biological records from several layers in qgis ? if not is it possible to create such a feature within the TomBio environment

burkmarr commented 5 years ago

It depends what you mean exactly. In QIGS you can select features from as many layers as you like but these are treated as separate selections and not as a single collection. You couldn't, for example, select features from two layers and then export these into a single new layer. What is it that you are aiming to do?

bwmoths commented 5 years ago

Hi, sorry to have been a bit vague ! Often for things like planning applications there is a need to extract biological records around a given location, usualy 2km or perhaps 5km radius. If one has a number of datasets such as say- mammals, ornithology, botany etc., expressed as layers in a project it would be useful to be able to define a circular area around a point that would allow for the extraction of the biological records from all layers and export that data to a file/spreadsheet perhaps ? Hope this helps.

bwmoths commented 5 years ago

Hi again, on reflection it is probably impracticle to select from multiple layers with perhaps differing data formats but, it would be useful to extract from one selected layer the records within the circular area.

burkmarr commented 5 years ago

You can do that with QGIS's 'select by location' tool (from the Vector > Research Tools menu or the Processing toolbox) - it's a really useful tool.

bwmoths commented 5 years ago

Thanks for the pointer ! I will see if I can make it work !!!

bwmoths commented 5 years ago

Thanks again Rich ! That seems to do the job !!

burkmarr commented 5 years ago

No worries.