How can I convert raster boundary to polygon? Raster Domain is equivalent tool in ArcGIS / Pro.
Best Answer
Raster boundary to polygon
+5- Contributor
Best answer by virtualcitymatt
Is this the only way? Because there will be a lot of small polygons made by RasterCellCoercer. It requires quiet much proccesing power and time (depends on raster obviously).
Try using the RasterExtentsCoercer. You can choose to extract the data extents. As long as teh area outside the polygon is nodata or (maybe even) masked with an alpha band this should give you what you want.
If this doesn't work you might have to preprocess the raster to make sure the are outside the polygon is set to NoData
This post is closed to further activity.
It may be an old question, an answered question, an implemented idea, or a notification-only post.
Please check post dates before relying on any information in a question or answer.
For follow-up or related questions, please post a new question or idea.
If there is a genuine update to be made, please contact us and request that the post is reopened.
It may be an old question, an answered question, an implemented idea, or a notification-only post.
Please check post dates before relying on any information in a question or answer.
For follow-up or related questions, please post a new question or idea.
If there is a genuine update to be made, please contact us and request that the post is reopened.
You can use a RasterCellCoercer with output set to polygons and excluding nodata, and then pass the individual cell polygon to a Dissolver. The output of the Area port should be what you're looking for.
+5- Contributor
You can use a RasterCellCoercer with output set to polygons and excluding nodata, and then pass the individual cell polygon to a Dissolver. The output of the Area port should be what you're looking for.
Is this the only way? Because there will be a lot of small polygons made by RasterCellCoercer. It requires quiet much proccesing power and time (depends on raster obviously).
+47- Celebrity
- Best Answer
Is this the only way? Because there will be a lot of small polygons made by RasterCellCoercer. It requires quiet much proccesing power and time (depends on raster obviously).
Try using the RasterExtentsCoercer. You can choose to extract the data extents. As long as teh area outside the polygon is nodata or (maybe even) masked with an alpha band this should give you what you want.
If this doesn't work you might have to preprocess the raster to make sure the are outside the polygon is set to NoData
Is this the only way? Because there will be a lot of small polygons made by RasterCellCoercer. It requires quiet much proccesing power and time (depends on raster obviously).
If the raster is huge, I agree. The RasterCellCoercer can be painfully slow.
Looking a bit further (thanks @d_l !) I see there is a RasterExtentsCoercer that should do what you want. Set it to Data Extents to exclude nodata values.
+47- Celebrity
Is this the only way? Because there will be a lot of small polygons made by RasterCellCoercer. It requires quiet much proccesing power and time (depends on raster obviously).
Ok, so I did a quick test. This only works if the area outside is NoData (an alpha band is not treated as no data.
If you have an Alpha mask then you can use a RasterBandSelector (select band '3'), RasterBandKeeper (this keeps just the Alpha band), then use a RasterBandNoDataSetter and select '0' for the NoData value. The RasterExtentsCoercer will then work well. I Tested this by clipping out the middle of a PNG file.