Intensities Along a Line
Intensities Along a Line
Trace along a parametrically defined curve, sampling the intensities.
These intensities will then be displayed graphically as a function of the
controlling parameter.
Sample along curve in which buffer ?
This entry specifies the buffer to act as the source for the intensities.
Trace along curve in Pixel or WOrld coordinates ?
The parametric curve may be defined in either pixel or world coordinates.
If world coordinates are chosen, the currently defined world coordinate
system will be used. Refer to [;PW World coordinates] for details. NOTE:
The pixel coordinate system is anisotropic.
{If world coordinates}
Formula for X as a function of S ?
This entry accepts the formula for the X world co-ordinate as a function
of the parametric variable S.
{If pixel coordinates}
Formula for I as a function of S ?
This entry accepts the formula for the I pixel co-ordinate as a function
of the parametric variable S.
{If world coordinates}
Formula for Y as a function of S ?
This entry accepts the formula for the Y world co-ordinate as a function
of the parametric variable S.
{If pixel coordinates}
Formula for J as a function of S ?
This entry accepts the formula for the J pixel co-ordinate as a function
of the parametric variable S.
Minimum value of S ?
This entry specifies the starting value for the control parameter S. The
next two entries will specify the maximum value of S and the number of
samples to be taken over this range.
Maximum value of S ?
This entry specifies the final value for the control parameter S.
Number of sample points along curve (including first and last points) ?
Enter the number of points along the curve at which you wish to collect
data. This number will then determine the size of the steps in S between
each sample point.
Plot output on which buffer (-1 for computer monitor) ?
The sampled intensities will be plotted either on the frame grabber
monitor, or the computer monitor. Note that if they are plotted on the
frame grabber monitor, the current contents of the buffer will NOT be
erased first.
Name of file to write data to (.DAT default extension; blank to suppress) ?
Enter the name of the file to which the sampled intensity data is to be
written. If you do not want to create such a file, simply enter a blank
line.
Name of file to control the plotting of data (.PLT default extension;
blank to suppress) ?
Enter the name of the file to which the controlling plot file is to be
written. If you do not want to create such a file, simply enter a blank
line. By saving the controlling plot file you will later be able to
modify it and/or use it with DigiPlot to generate further plots.
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DigImage User Documentation
Stuart Dalziel,
last page update: 19 February 1996