Interpreting a profile table

In the case of an RGB layer, a Profile Table is a numerical representation of the RGB input channels of an active image.

Sample Points and Distances

The table lists numeric information for each sample point along the current profile. A sample point is a pixel. The spacing is determined by the pixel size. The range depends on the length of the vector and the image scale. A field is displayed for each of the channels that is marked Visible in the Profile Options area.

From the Profile Table window, click Options.

Profile Options:

Gives you control over various aspects of the profile graph and table. You can control the following properties:

Color:

Displays the color used to represent each channel on the profile graph. You can change any color by clicking on the color chip you want to change. This opens the Line Color editor based on the RGB color space. The color representation of the channel's profile on the graph is changed.

Visible:

A check mark in this field indicates that a particular channel is visible in the profile graph and profile table.

Current Channel:

Indicates which plotted channel is associated with the mensuration bars. There can be only one current channel, which is indicated by an X. To select the current channel, click the appropriate field under the Current Channel column.

Profile View:

Sets the coordinates for the horizontal axis of the Profile Graph. The sample point coordinates are based on the image pixel size, in meters. Choose between Georeferenced and Sample Point coordinates. If Georeferenced is selected, the values in the X axis are displayed in meters. If Sample Points are selected, the values in the X axis represent pixel units. For example, if a vector line is 8000 m long, the maximum value for the X axis if georeferenced is selected in the Profile options is 8000. If the imagery has a resolution of 30 m, the maximum value for the same line displayed using Sample points is approximately 267 (8000/30).