1 | ;------------------------------------------------------------ |
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2 | ;------------------------------------------------------------ |
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3 | ;------------------------------------------------------------ |
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4 | ;+ |
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5 | ; |
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6 | ; @file_comments |
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7 | ; function called by [XYZ]TICKFORMAT (see the help to see how to use it) to label axes in latitude. |
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8 | ; |
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9 | ; @categories |
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10 | ; Graphics |
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11 | ; |
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12 | ; @param AXIS |
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13 | ; It is the axis number: 0 for X axis, 1 for Y axis, 2 for Z axis. |
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14 | ; |
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15 | ; @param INDEX |
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16 | ; It is the tick mark index which starts at 0. |
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17 | ; |
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18 | ; @param VALUE |
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19 | ; It is the default tick mark value (a floating-point number). |
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20 | ; |
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21 | ; @returns |
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22 | ; A string, used automatically to label |
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23 | ; |
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24 | ; @history |
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25 | ; Sebastien Masson (smasson\@lodyc.jussieu.fr) |
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26 | ; ??? |
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27 | ; 14/10/1999 format of labels |
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28 | ; |
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29 | ; @version |
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30 | ; $Id$ |
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31 | ; |
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32 | ;- |
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33 | ;------------------------------------------------------------ |
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34 | ;------------------------------------------------------------ |
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35 | ;------------------------------------------------------------ |
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36 | FUNCTION lataxe, axis, index, value |
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37 | ;------------------------------------------------------------ |
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38 | ; We put back value in the segment [0,180] |
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39 | ; |
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40 | compile_opt idl2, strictarrsubs |
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41 | ; |
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42 | lat=value mod 360 |
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43 | if lat lt 0 then lat=lat+360 |
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44 | if lat gt 180 then lat=lat-180 |
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45 | ; format of labels: |
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46 | case 1 of |
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47 | lat EQ round(lat):fmt = 'i4' |
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48 | 10.*lat EQ round(10.*lat):fmt = 'f6.1' |
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49 | ELSE:fmt = 'f7.2' |
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50 | endcase |
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51 | ; we write the label |
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52 | if lat le 90 and lat ne 0 then nom=string(lat, format='('+fmt+',''N'')') |
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53 | if lat gt 90 then nom=string(180-lat, format='('+fmt+',''S'')') |
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54 | if lat eq 0 then nom=string(lat, format='('+fmt+')') |
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55 | ; |
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56 | return, nom |
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57 | end |
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58 | |
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