Creating an image profile

You can generate a spectral plot and a table of numeric values across an overlaid vector that shows image information related to the RGB input channels. The resulting image profile gives a cross section of the pixel values under the vector. A table of pixel values for the vector is generated automatically. Pixel values in the profile table are across three image planes. You can save the table values as a text file and you can save and print the profile graph.

If a vector is not open, a line is generated automatically and used to calculate the profile. You may want to create a vector profile under a specific area of your image or select an existing vector for the profile. You can modify the profile or draw a new one.

Note: You must have a raster file open to create an image profile.

To create an image profile

To create the profile automatically, on the Maps tab, right-click a raster layer, and then click Profile.
A new vector layer is added automatically to the Maps tab and a new vector to the view pane to calculate the vector profile. The Profile Graph and Profile Table windows appear.
To create a new profile, do the following:
1. Open a vector segment, or add a new vector layer and draw a vector by using the Vector Editing tools.
2. On the Maps tab, right-click the layer, and then click Profile.
  The Profile Table and Profile Graph windows appear.
  
  The Profile Graph window displays the profile of the selected vector. If no vector is selected, a new vector layer is added automatically on the Maps tab, and a new vector is added to the view pane to calculate the vector profile. This vector profile is displayed in the Profile Graph window.
3. Click the Vector Editing button.
4. Click another vector for which you want to create a profile.