DATA_SCAN > How States are Scanned to Find Max/Min "Automatic" Contour Levels During Animation
DATA_SCAN > How states are scanned to find max/min automatic contour levels during animation
When you perform an animation of data with contours in "automatic" mode D3PLOT has to scan through all candidate states to find their max and min data values so that it can set the contour levels.
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If you have a lot of states this can be slow, and in many cases you will know that your data values rise (or fall) monotonically, and that using values from the first and last states only will bound all possible values in between. Therefore you have a choice of:
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| EVERY STATE | This is the rigorous approach: every state is checked, and the true max and min values will be found. It can be slow if there are many states. |
| FIRST/LAST | Only the first and last states selected for animation are scanned for their max and min values. This is the default. |
In order to protect you from missing peaks and troughs if, during the assembly
of an animation, a data value outside the expected max/min values is found
while in
mode you will be warned
and offered the chance to swap back to
.
However if you do swap back it will be necessary to rebuild any frames that
have already been computed in order to make them have contour bands representing
the new max/min values.