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CPlotView:PlotImageCol The PlotImageCol method plots the pixel values along an image column, as a function of y-axis position. Syntax
RemarksThis method creates a graph of luminance value versus row number for the specified image column. The image coordinates are specified in pixel coordinates even if the plot is to be made using world coordinates (the bUseWcs argument). The x, y1, and y2 arguments specify column and row positions, indexed with the first pixel at 1. If you need to plot from an image position in world coordinates, use the WcsToXy method to convert x, y1, or y2 before calling PlotImageCol. ExamplesExample 1: Assume that a CImage I exists. The following script plots column 150 from row 300 through row 499. World Coordinates units are not plotted, since the bWcs value is not specified:
Example 2: Suppose an astronomical image is the current image and that it has an equatorial form of world coordinate calibration. The following script plots the image luminance at coordinate (5:20:13.54,-12:15:20.4), over 100 pixels long and aligned in the column (vertical) direction. Since this fragment plots 200 rows, the cursor's column extent is unimportant and we need only to set the number of rows (height):
Related TopicsSubpixel Coordinate Definition
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