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- Autocontour Help Information *
-
- The Autocontour commands are use to
- set the current picture's contour's
- heights in a way that will evenly
- distribute a picture's heights
- amongst the contours.
-
- You are responsible for choosing the
- pen patterns, pattern length and pen
- colors. Autocontour will choose
- heights for your contours. Length
- of pattern effects how much detail
- is shown in your picture.
-
- To use the Autocontour command, set
- a pattern of pens in the contour
- palette and pull down one of the
- two Autocontour menu sub-items.
-
- Detailed explanation of Autocontour:
-
- When you pull down the Autocontour
- menu sub-item, MandelVroom performs
- the following steps:
-
- 1. Count number of contours in
- contour palette. To do this
- the program starts with the
- righmost contour and looks for
- the first contour with a pen
- number not equal to 1.
-
- 2. Calculate number of pixels in
- your picture minus the number
- pixels that have an altitude
- equal to the MaxIteration for
- your picture.
-
- 3. Divide the number of pixels
- from step 2 by the number of
- contours in step 1.
-
- 4. Calculate a histogram of the
- number of pixels at each of the
- possible heights.
-
- The number calculated in step 3 is
- the average number of pixels per
- contour. Using the histogram data,
- the program allocates heights to
- contours from tallest to shortest.
-
- There are two flavors of
- AutoContour. The above description
- describes first of the two flavors.
- The second differs from the first,
- in that once a given contour's
- height range is equal to one, all
- subsequent contour height ranges are
- set to one.
-
-
-