This primarily occurs with very bright and dark pixels that occur at the extreme ends of the histogram, although some holes can occur with a few data values in the middle of the histogram. Small differences in data values between the reduced-resolution version of the data and the full-resolution data can result in missing pixels.
#Scatter plot graph maker full#
A reduced-resolution version of the data (called a pyramid) is used to create the scatter plot when the Full Band option is enabled. For example, if you draw a ROI around the entire scatterplot and the Full Band option is enabled, you may see some missing pixels, or holes, in the resulting class displayed in the Image window. The Full Band option provides a qualitative representation of the data, and it has limitations that you should be aware of. To include the full range of data in the Scatter Plot, enable the Full Band check box in the Scatter Plot Tool dialog. This is useful with large files, as it provides quick interactive response time. By default, the Scatter Plot is computed on the pixels visible in the Image window.To change the name and color of the Scatter Plot classes, see Create and Manage Classes. The Scatter Plot Tool dialog appears, and a Scatter Plot layer is added to the Layer Manager.
Interactively View Pixel Distribution by Class.
Tip: If a pyramid file does not exist and downsampling is not available for the input raster, the 2D Scatter Plot tool will not be available for use.Ĭlick on any of the following links for details: If the bands do not contain dependent data, either band can be plotted on either axis and the Scatter Plot illustrates only the degree of correlation between the two bands. One band provides the x coordinates and the other band provides the y coordinates. The Scatter Plot Tool allows you to interactively classify two bands of raster data.
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