Latest Contributions by MervynLotter

If you are going to use ArcGIS Pro to run your supervised image classification then there is no need to create a single tif image. Pro will accept the mosaic data set as input into geoprocessing tools. But note that if you are planning on running the segment mean shift tool, then the required input is a 3 band 8 bit image. I usually use the Extract Bands raster function to extract the 3 bands I need and then under General I change the pixel type to 8 bit. I then use the output of this raster function as input into the segment mean shift tool. ... View more

You can also try a Spatial Join and under Match Option, select Closest. This will then add a field in your attribute table with the closest distance.  You can then also limit this search distance to say 100 km if you set a value in the Search Radius field.  ... View more

If you want to calculate the average or median value of an elevation raster, then look at Focal Statistics. Focal statistics can provide you with a multitude of various mathematical operations for, example, a 9 x 9 pixel area. See How Focal Statistics works—Help | ArcGIS Desktop  and Focal Statistics—Help | ArcGIS Desktop  Or if your zones are in a different raster, then look at using Zonal Statistics as Table How Zonal Statistics works—Help | ArcGIS Desktop and  Zonal Statistics as Table—Help | ArcGIS Desktop  ... View more

Hi Jane Having a distance of 0 may indicate that these features are overlapping or touching. If they are not, then check for any multipart features that may be influencing the results. I also frequently use the Repair Geometry tool if anything usually looks amis.  ... View more

I think you would find the Buffer tool can do this for you. https://pro.arcgis.com/en/pro-app/tool-reference/analysis/buffer.htm The Buffer tool has an option to get the required buffer distance for each feature from an attribute field. You would first need to add a new field to your attribute table that will store the required buffer distance for each of your river orders (what you call the"strokeweig" attribute).  I dont know how familiar you are will GIS operations in Pro so I will just add that the process I would follow would be: 1. Add a new numeric field to your attribute table 2. Then use the Select by Attributes tool to select one of your unique river order/strokeweig fields 3. Then with tool still open, click on the Open Another Tool button in top-right corner of geoprocessing tool to open a new tool without loosing any changes set in the Select by Attributes tool.  4. Search for Calculate Field, supply your attribute table as input then provide your required distance in the expression field.  5. Once done, click on the Open Another Tool to go back to Select by Attribute tool to modify the expression to select a new river order, then go back to Calculate Field to provide new distance values, etc. 6. Then when you run your buffer just point it to the new distance filed.  ... View more

Not sure if this will work but have you tried running the Repair Geometry gp tool on the affected layers?  ... View more

You will also get this error message if you do not select the feature before trying to split it.  ... View more

Although I am not using python (you could probably still try and code this), I frequently encounter schema lock issues when using Field Calculator and by simply selecting Enable Undo this allows me to complete the calculation 90% of the time.  ... View more

Hi Kory Thank you for the feedback, much appreciated.  Regards Mervyn  ... View more