ELEMENT_INDEX_STR(A, B) Returns index value in B for each string in A. The string comparisons are case-sensitive.
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Arguments: |
A |
string data |
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B |
list of strings to match |
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Result Axes: |
X |
Inherited from argument A |
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Y |
Inherited from argument A |
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Z |
Inherited from argument A |
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T |
Inherited from argument A |
Example
(See ELEMENT_INDEX) above for a simple example of the numeric case. )
Say we have a dataset that contains a string variable called institute for a collection of stations, and station locations xloc, yloc. Use ELEMENT_INDEX_STR to draw a polygon plot where the data stations belonging to each institute is shown by a dot with a unique color for each institution.
yes? USE obsdata.nc ! contains a variable called institute
yes? LET inst_names = {"NOAA", "WHOI", "FSU", "BOM"}
yes? LET code = IS_ELEMENT_STR(institute, inst_names)
yes? LIST institute, code
X: 0.5 to 53.5
Column 1: INSTITUTE
Column 2: CODE is ELEMENT_INDEX_STR(institute, {"NOAA", "FSU", "BOM", "WHOI"})
INSTITUTE CODE
1 / 1: "NOAA" 1.000
2 / 2: "WHOI" 4.000
3 / 3: "FSU" 2.000
4 / 4: "BOM" 3.000
5 / 5: "NOAA" 1.000
6 / 6: "BOM" 3.000
..
yes? GO basemap X=120:250 Y=25S:65N 20
yes? GO polymark POLY/OVER/PALETTE=rainbow_by_levels/LEV=(1,5,1) \ xloc, yloc, code, square, 0.2