Usage: |
mygrid = SPKRtrmat (obj, xl, xu, yl, yu, n)
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Input: |
| obj | list - (of type "trls" or "trgls") calculated by
SPKRsurfls or SPKRsurfgls
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| xl | scalar - lower limit in x-direction of the rectangle for grid
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| xu | scalar - upper limit in x-direction of the rectangle for grid
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| yl | scalar - lower limit in y-direction of the rectangle for grid
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| yu | scalar - upper limit in y-direction of the rectangle for grid
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| n | scalar - use n x n grid within the rectangle
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Output: |
| res | list - consisting of components
z, xl, xu, yl, yu, n, type --
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| z | grid - for further useage with SPKRmultcontours
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| xl | scalar - same as input value xl
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| xu | scalar - same as input value xu
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| yl | scalar - same as input value yl
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| yu | scalar - same as input value yu
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| n | scalar - same as input value n
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| type | string - "trmat"
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