how to filter a minimum area size?

[DavidGregor1]

I 'm making a site suitability analysis with several layer, but i don't know how to restrict the areas what are smaller than 1ha.

[DanPatterson_Retired]

What software?  If ArcMap and you are doing this with the spatial analyst extension, you can do this with the raster calculator expression if you know the cell size .  You can query for areas less than that threshold.  If you have many areas that belong to that class, you will need to perform a RegionGroup first to delineate unique areas then query for the threshold.

[JayantaPoddar · Accepted solution]

Hi David,

Make sure the spatial reference is in Projected coordinate system. If the output of your site suitability analysis is vector layer, you could filter the polygons using Definition Query.

e.g.: If the unit of the reference system is meters,

Go to Layer Properties > Definition Query. Click Query Builder. Write the following query

Edited: 'Shape_Area' > 10000