Latest Contributions by SteveLynch

Have you thought of using the CellStatistics tool? Steve ... View more

Jenn Can you share the data (slynch@esri.com) And you do have java installed and you did try IDW? Thanks Steve ... View more

Giacomo Please contact your local distributor or Esri Support. Also try turning off "background processing", this can be done via Geoprocessing -> Geoprocessing options and then uncheck the background processing option. The reason I suggested that your data are corrupt is based on the fact that I (nor you) could open the point feature class that you provided me. Steve ... View more

To better understand the problem could you please provide me with a copy of your input data, the interpolation parameters (i.e. a screenshot of the filled out dialog). If you do not want to post it on the Forum you can email me (slynch@esri.com) Thanks Steve ... View more

April The default extension in the RasterToASCII GP tool is .txt, however, you can also use .asc These are the 2 extensions to use. If you create it using the .asc extension then it becomes a supported raster data format, i.e. you can use it in ArcGIS as any other raster dataset (no need to then use ASCIIToRaster). Please can you share a screenshot of the dialog or are you doing it via scripting. Thanks Steve ... View more

or you can read the post (05-19-2011 02:13 PM) in this thread Steve ... View more

Julia Does the raster have statistics ? ( use GetRasterProperties tool and find the maximum value (for example)). If your raster does not have statistics then calculate them. How was the raster created? Steve ... View more

If you have ArcGIS 10, you can also use the Find Identical (http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//001700000054000000) tool -Steve ... View more

and if you had 100,000 datasets.... The script or Modelbuilder can be used if you want to automate the procedure. Steve ... View more

Have you thought of using the RepairGeometry tool ? ... View more

One way would be to iterate through some power values and use the CrossValidation tool to get the RMSE value. The power value associated with the lowest RMSE is the optimal power value. ... View more

Why not use CellStatistics with the ignore_nodata option. Steve ... View more

These are interpolation method dependant. IDW, for example on has error. Kriging has many more. Steve ... View more

Please check the help, below is a snippet from IDW's help. Some input datasets may have several points with the same x,y coordinates. If the values of the points at the common location are the same, they are considered duplicates and have no affect on the output. If the values are different, they are considered coincident points. The various interpolation tools may handle this data condition differently. For example, in some cases the first coincident point encountered is used for the calculation; in other cases the last point encountered is used. This may cause some locations in the output raster to have different values than what you might expect. The solution is to prepare your data by removing these coincident points. The Collect Events tool in the Spatial Statistics toolbox is useful for identifying any coincident points in your data. Steve ... View more