Tag Info

New answers tagged

5

As troubleshot by @Paul, the error message is being triggered because you have placed your *.gsg file inside of a file geodatabase folder (*.gdb). It seems like the Maximum Likelihood Classification tool is getting confused by this. However, the error can be easily avoided by ensuring that your *.gsg file is NOT inside of a file geodatabase folder (*.gdb). ...


2

As @SaraBarnes said in the comments, you will likely first have to export the file to a shapefile or feature class. Next, in order to classify unique values, you have to "Add All Values" or add specific values you'd like to classify with the "Add Values..." buttons in the Symbology tab, as shown below. You can then set symbology based on those values.


1

Regression does not require all of the variables be on a common scale in order to be compared to each other. Whether you reclass them before running the analysis, or the analysis tool you choose lets you do so within the tool is up to you and the tool choice. You would of course want to keep a copy of any original data. I might suggest reviewing the ArcGIS ...


2

One of the most common reason for the covariance matrix that is not invertible from samples is the presence of null variance for one band (all your pixel in one band have the same value). In this case, increasing the size of the sample increase the chances to have a non null variance. Note that the band 6 (thermal) is the most likely to be constant, ...


0

Joseph, you're right. Here is the solution to MY problem. May be someone could add some more detail, but this is how I solved it: The region of my interest was about a quarter of the original image so, I clipped the Landsat image to a smaller size, leaving out a big region in which I'm not interested BEFORE start classifying (I was planning to do it at ...


0

There is an ArcgisToolbox built for Arcgis 10.1 freely available here Seems it is developed for the multispectral raster classification or multi band raster classification.. I've just tried for some single band raster, just to check and actually got an error related to file mosaic'ing.. and renameing file (248 line). If you just change the name if should ...


4

those are different things. Image classification is the process of creating a thematic image where each pixel is assigned a number representing a class (can include the class 'unclassified'). In an aerial image the classes can be soil, vegetation, water etc. image classification algorithms examples are k-means or ISO-DATA. Pattern recognition is the ...



Top 50 recent answers are included