[Qgis-user] Count points overlaying a raster layer

[Nicolas Cadieux]

Hi,

There are many options.  I sometimes use the point sampling tool (with a rater having class data) and then export to excel or libreoffice and do a cross tabulation.  Some option are available directly in qgis.  Be aware that most plugins that deal with zonal statistics may  will not work if you have multi polygons.

Nicolas

http://www.qgistutorials.com/fr/docs/sampling_raster_data.html

https://conservationecology.wordpress.com/tag/zonal-statistics/
https://docs.qgis.org/2.2/en/docs/user_manual/plugins/plugins_zonal_statistics.html
https://anitagraser.com/2013/02/02/group-stats-tutorial/

> Le 28 nov. 2016 à 21:38, K Imran M [via OSGeo.org] <ml-node+s1560n5297767h38 at n6.nabble.com> a écrit :
> 
> Dear all,
> 
> I apologize if this has been asnwered before. My question is:
> 
> if I have 2 layers- one is a vector (points in shapefile format) layer and the other one is a raster layer (flood area). And I would like to count the number of points inside the flood area. How can I do that? Should I convert the raster to vector first? Can anyone kindly refer me to any resource if you know any?
> 
> Best regards.
> 
> Kamarul
> 
> ---------------------------------------------------------------------
> 
> Kamarul Imran Musa (MD MCommunityMed)
> Associate Professor (Epidemiology and Biostatistics) &  
> Public Health Physician,
> 
> 
> 
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