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Last change on this file since 111 was 111, checked in by pinsard, 18 years ago
modification of savesaxo.sh to add ?format=raw as often needed in one line, and suppress .html in idldoc-index*.html (known bug of idldoc)
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622	</style>
623
624
625	<script type="text/javascript">
626	function setTitle() {
627	parent.document.title="computegrid.pro (SAXO Documentation)";
628	}
629	</script>
630	</head>
631
632	<body onload="setTitle();">
633
634	<div id="navbar_title">
635	<h1>SAXO Documentation</h1>
636	</div>
637
638
639	<div id="main_navbar">
640
641	<table cellspacing="0">
642	<tr>
643
644	<td><a href="./../overview.html?format=raw" title="Overview of library">Overview</a></td>
645
646
647
648	<td >Directory</td>
649
650
651
652	<td><a href="./../idldoc-categories.html?format=raw" title="Browse library by category">Categories</a></td>
653
654
655
656	<td><a href="./../idldoc-index.html?format=raw" title="Index of files, routines, and parameters">Index</a></td>
657
658
659
660	<td><a href="./../search-page.html?format=raw" title="Search library">Search</a></td>
661
662
663	<td id="selected">File</td>
664
665
666	<td >Source</td>
667
668
669
670	<td><a href="./../idldoc-help.html?format=raw" title="Help on IDLdoc">Help</a></td>
671
672
673	<td >Etc</td>
674
675	<td id="flexible">Developer documentation</td>
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678
679	</div>
680
681	<div id="secondary_navbar">
682
683	<< prev file \| <a href="micromeshmask.html?format=raw">next file >></a>    <a href="computegrid.html?format=raw" target="_TOP">view single page</a> \| <a href="./../index.html?format=raw" target="_TOP">view frames</a>    summary: fields \| routine    details: <a href="#routine_details">routine</a>
684
685	</div>
686
687
688	<div id="container">
689
690	<h1 class="directory"><a href="directory-overview.html?format=raw">Grid/</a></h1>
691	<h2 class="pro_file">computegrid.pro</h2>
692
693	<div id="file_attr">
694	<dl>
695	</dl>
696	</div>
697
698	<div id="file_comments"> compute the grid parameters from cm_4mesh common:
699
700	computegrid, startx, starty, stepx, stepy, nx, ny
701	computegrid, startx, starty, stepx, stepy
702	computegrid, xaxis = xaxis, yaxis = yaxis
703	or a suitable mix...
704
705	horizontal parameters:
706	glam[tf], gphi[tf], e1t and e2t
707	and if FULLCGRID keyword is defined:
708	glam[uv], gphi[uv], e1[uvf] and e2[uvf]
709
710	verticals parameters:
711	gdep[tw], e3[tw]
712
713	masks: tmask
714	and if FULLCGRID keyword is defined:[uv]maskred fmaskred[xy]
715
716	triangulation: triangles_list
717
718	key_ parameters:
719	key_shift, key_periodic, key_zreverse, key_yreverse,
720	key_stride, key_onearth, key_partialstep
721	</div>
722
723
724
725
726
727
728
729
730
731	<div id="routine_details">
732
733
734	<div class="routine_details" id="_computegrid">
735
736	<h2><a class="top" href="#container">top</a>computegrid <span class="categories"> grid
737	</span></h2>
738
739	<p class="header">
740	computegrid<span class="result">, <a href="#_computegrid_param_startx">startx</a>, <a href="#_computegrid_param_starty">starty</a>, <a href="#_computegrid_param_stepxin">stepxin</a>, <a href="#_computegrid_param_stepyin">stepyin</a>, <a href="#_computegrid_param_nxin">nxin</a>, <a href="#_computegrid_param_nyin">nyin</a></span>, <a href="#_computegrid_keyword_XAXIS">XAXIS</a>=<span class="result">XAXIS</span>, <a href="#_computegrid_keyword_YAXIS">YAXIS</a>=<span class="result">YAXIS</span>, <a href="#_computegrid_keyword_ZAXIS">ZAXIS</a>=<span class="result">ZAXIS</span>, <a href="#_computegrid_keyword_MASK">MASK</a>=<span class="result">MASK</span>, <a href="#_computegrid_keyword_GLAMBOUNDARY">GLAMBOUNDARY</a>=<span class="result">GLAMBOUNDARY</span>, <a href="#_computegrid_keyword_XMINMESH">XMINMESH</a>=<span class="result">XMINMESH</span>, <a href="#_computegrid_keyword_XMAXMESH">XMAXMESH</a>=<span class="result">XMAXMESH</span>, <a href="#_computegrid_keyword_YMINMESH">YMINMESH</a>=<span class="result">YMINMESH</span>, <a href="#_computegrid_keyword_YMAXMESH">YMAXMESH</a>=<span class="result">YMAXMESH</span>, <a href="#_computegrid_keyword_ZMINMESH">ZMINMESH</a>=<span class="result">ZMINMESH</span>, <a href="#_computegrid_keyword_ZMAXMESH">ZMAXMESH</a>=<span class="result">ZMAXMESH</span>, <a href="#_computegrid_keyword_ONEARTH">ONEARTH</a>=<span class="result">ONEARTH</span>, <a href="#_computegrid_keyword_PERIODIC">PERIODIC</a>=<span class="result">PERIODIC</span>, <a href="#_computegrid_keyword_PLAIN">PLAIN</a>=<span class="result">PLAIN</span>, <a href="#_computegrid_keyword_SHIFT">SHIFT</a>=<span class="result">SHIFT</span>, <a href="#_computegrid_keyword_STRIDE">STRIDE</a>=<span class="result">STRIDE</span>, <a href="#_computegrid_keyword_FULLCGRID">FULLCGRID</a>=<span class="result">FULLCGRID</span>, <a href="#_computegrid_keyword_XYINDEX">XYINDEX</a>=<span class="result">XYINDEX</span>, <a href="#_computegrid_keyword_FBASE2TBASE">FBASE2TBASE</a>=<span class="result">FBASE2TBASE</span>, <a href="#_computegrid_keyword_STRCALLING">STRCALLING</a>=<span class="result">STRCALLING</span>, <a href="#_computegrid_keyword__extra">_extra</a>=<span class="result">_extra</span></p>
741
742	<div class="comments">
743	</div>
744
745
746
747
748	<h3>Parameters</h3>
749
750
751	<h4 id="_computegrid_param_startx">startx
752	<span class="attr">in</span>
753
754
755	<span class="attr">required</span>
756
757
758
759
760	</h4>
761
762	<div class="comments"> scalar, x starting point</div>
763
764	<h4 id="_computegrid_param_starty">starty
765	<span class="attr">in</span>
766
767
768	<span class="attr">required</span>
769
770
771
772
773	</h4>
774
775	<div class="comments"> scalar, y starting point</div>
776
777	<h4 id="_computegrid_param_stepxin">stepxin
778	<span class="attr">in</span>
779
780
781	<span class="attr">required</span>
782
783
784
785
786	</h4>
787
788	<div class="comments"> scalar or vector: x direction step, must be > 0
789	if vector nx is not used</div>
790
791	<h4 id="_computegrid_param_stepyin">stepyin
792	<span class="attr">in</span>
793
794
795	<span class="attr">required</span>
796
797
798
799
800	</h4>
801
802	<div class="comments"> scalar or vector: y direction step,
803	could be > 0 (south to north) or < 0 (north to south)
804	if vector ny is not used</div>
805
806	<h4 id="_computegrid_param_nxin">nxin
807	<span class="attr">in</span>
808
809
810	<span class="attr">required</span>
811
812
813
814
815	</h4>
816
817	<div class="comments"> scalar, number of points in x direction </div>
818
819	<h4 id="_computegrid_param_nyin">nyin
820	<span class="attr">in</span>
821
822
823	<span class="attr">required</span>
824
825
826
827
828	</h4>
829
830	<div class="comments"> scalar, number of points in y direction
831	</div>
832
833
834
835
836
837
838	<h3>Keywords</h3>
839
840	<h4 id="_computegrid_keyword_XAXIS">XAXIS
841
842
843
844
845
846
847
848
849	</h4>
850
851	<div class="comments"> to specify longitude1 with a 1 or 2 dimension array, in
852	this case startx, stepx and nx are not used but could be
853	necessary if the y axis is not defined with yaxis. It must be
854	possible to sort the first line of xaxis in the increasing
855	order by shifting its elements.
856	</div>
857
858	<h4 id="_computegrid_keyword_YAXIS">YAXIS
859
860
861
862
863
864
865
866
867	</h4>
868
869	<div class="comments"> to specify latitudes with a 1 or 2 dimension array, in
870	this case starty, stepy and ny are not used but starty and
871	stepy could be necessary if the x axis is not defined with xaxis.
872	It must be sorted in the increasing or deceasing order
873	(along each column if 2d array).
874	</div>
875
876	<h4 id="_computegrid_keyword_ZAXIS">ZAXIS
877
878
879
880
881
882
883
884
885	</h4>
886
887	<div class="comments"> to specify the vertical axis with a 1 dimension
888	array. Must be sorted in the increasing or deceasing order
889	</div>
890
891	<h4 id="_computegrid_keyword_MASK">MASK
892
893
894
895
896
897
898
899
900	</h4>
901
902	<div class="comments"> to specify the mask with a 2 or 3 dimension array
903	</div>
904
905	<h4 id="_computegrid_keyword_GLAMBOUNDARY">GLAMBOUNDARY
906
907
908
909
910
911
912
913
914	</h4>
915
916	<div class="comments"> a 2 elements vector, [lon1,lon2], the longitute
917	boundaries that should be used to visualize the data.
918	we must have lon2 > lon1 and lon2 - lon1 le 360
919	key_shift will be defined automaticaly computed according to
920	glamboundary by using the FIRST LINE of glamt but
921	key_shift will /= 0 only if key_periodic = 1
922	</div>
923
924	<h4 id="_computegrid_keyword_XMINMESH">XMINMESH
925
926
927
928
929
930
931
932
933	</h4>
934
935	<div class="comments"> </div>
936
937	<h4 id="_computegrid_keyword_XMAXMESH">XMAXMESH
938
939
940
941
942
943
944
945
946	</h4>
947
948	<div class="comments"> </div>
949
950	<h4 id="_computegrid_keyword_YMINMESH">YMINMESH
951
952
953
954
955
956
957
958
959	</h4>
960
961	<div class="comments"> </div>
962
963	<h4 id="_computegrid_keyword_YMAXMESH">YMAXMESH
964
965
966
967
968
969
970
971
972	</h4>
973
974	<div class="comments"> </div>
975
976	<h4 id="_computegrid_keyword_ZMINMESH">ZMINMESH
977
978
979
980
981
982
983
984
985	</h4>
986
987	<div class="comments">
988	to define the common variables i[xyz]minmesh
989	used to define the grid only in a zoomed part of the original
990	grid. Defaut values are 0L, max value is [XYZ]MAXMESH
991	</div>
992
993	<h4 id="_computegrid_keyword_ZMAXMESH">ZMAXMESH
994
995
996
997
998
999
1000
1001
1002	</h4>
1003
1004	<div class="comments">
1005	to define the common variables i[xyz]maxmesh
1006	used to define the grid only in a zoomed part of the original
1007	grid. Defaut values are jp[ijk]glo-1, max value is
1008	jp[ijk]glo-1. if [XYZ]MAXMESH is negative, then we define
1009	i[xyz]maxmesh as jp[ijk]glo - 1 + [XYZ]MAXMESH instead of
1010	[XYZ]MAXMESH
1011	</div>
1012
1013	<h4 id="_computegrid_keyword_ONEARTH">ONEARTH
1014
1015
1016
1017
1018
1019
1020
1021
1022	</h4>
1023
1024	<div class="comments"> = 0 or 1 to force the manual definition of
1025	key_onearth (to specify if the data are on earth -> use longitude
1026	/latitude etc...). By default, key_onearth = 1.
1027	note that ONEARTH = 0 forces PERIODIC = 0, SHIFT = 0,
1028	and is cancelling GLAMBOUNDARY
1029	</div>
1030
1031	<h4 id="_computegrid_keyword_PERIODIC">PERIODIC
1032
1033
1034
1035
1036
1037
1038
1039
1040	</h4>
1041
1042	<div class="comments"> = 0 or 1 to force the manual definition of
1043	key_periodic. By default, key_periodic is automaticaly
1044	computed by using the first line of glamt.
1045	</div>
1046
1047	<h4 id="_computegrid_keyword_PLAIN">PLAIN
1048
1049
1050
1051
1052
1053
1054
1055
1056	</h4>
1057
1058	<div class="comments"> force PERIODIC = 0, SHIFT = 0, STRIDE = [1, 1, 1] and
1059	suppress the automatic redefinition of the domain in case of
1060	x periodicity overlap, y periodicity overlap (ORCA type only)
1061	and mask border to 0.
1062	</div>
1063
1064	<h4 id="_computegrid_keyword_SHIFT">SHIFT
1065
1066
1067
1068
1069
1070
1071
1072
1073	</h4>
1074
1075	<div class="comments"> = scalar to force the manual definition of key_shift. By
1076	debault, key_shift is automaticaly computed according to
1077	glamboundary (when defined) by using the FIRST LINE of glamt. if
1078	key_periodic=0 then in any case key_shift = 0.
1079	</div>
1080
1081	<h4 id="_computegrid_keyword_STRIDE">STRIDE
1082
1083
1084
1085
1086
1087
1088
1089
1090	</h4>
1091
1092	<div class="comments"> a 3 elements vector to specify the stride in x, y, z
1093	direction. Default definition is [1, 1, 1]. The resulting value
1094	will be stored in the common (cm_4mesh) variable key_stride
1095	</div>
1096
1097	<h4 id="_computegrid_keyword_FULLCGRID">FULLCGRID
1098
1099
1100
1101
1102
1103
1104
1105
1106	</h4>
1107
1108	<div class="comments"> activate to specify that you want to compute
1109	all the paremeters of a C grid. Computation of glam[uv],
1110	gphi[uv], e1[uvf], e2[uvf], [uv]maskred and fmaskred[xy]
1111	will be add to the default computations
1112	</div>
1113
1114	<h4 id="_computegrid_keyword_XYINDEX">XYINDEX
1115
1116
1117
1118
1119
1120
1121
1122
1123	</h4>
1124
1125	<div class="comments"> activate to specify that the horizontal grid should
1126	be simply defined by using the index of the points
1127	(xaxis = findgen(nx) and yaxis = findgen(ny))
1128	using this keyword forces key_onearth=0
1129	</div>
1130
1131	<h4 id="_computegrid_keyword_FBASE2TBASE">FBASE2TBASE
1132
1133
1134
1135
1136
1137
1138
1139
1140	</h4>
1141
1142	<div class="comments"></div>
1143
1144	<h4 id="_computegrid_keyword_STRCALLING">STRCALLING
1145
1146
1147
1148
1149
1150
1151
1152
1153	</h4>
1154
1155	<div class="comments"> a string containing the calling command used to
1156	call computegrid (this is used by xxx.pro)
1157	</div>
1158
1159	<h4 id="_computegrid_keyword__extra">_extra
1160
1161
1162
1163
1164
1165
1166
1167
1168	</h4>
1169
1170	<div class="comments"></div>
1171
1172
1173
1174
1175	<h3>Version history</h3>
1176
1177
1178	<h4>History</h4><div class="value"> Sebastien Masson (smasson@lodyc.jussieu.fr)
1179	2000-04-20
1180	Sept 2004, several bug fixs to suit C grid type...
1181	Aug 2005, rewritte almost everything...</div>
1182
1183
1184	<h3>Known issues</h3>
1185
1186
1187
1188	<h4>Restrictions</h4><div class="value"> if the grid has x/y periodicity orverlap and/or if
1189	the mask has 0 everywhere at the border (like a close sea) and
1190	if (we did not activate /plain and xminmesh, xmaxmesh, yminmesh,
1191	ymaxmesh keywords are defined to their default values), we redefine
1192	xminmesh, xmaxmesh, yminmesh, ymaxmesh in order to reove the
1193	overlapping part and/or to open the domain (avoid ti be forced
1194	to use cell_fill = 1).
1195
1196	FUV points definition...
1197	</div>
1198
1199	<h3>Other attributes</h3>
1200
1201
1202	<h4>Uses routines</h4><div class="value"> cm_4mesh cm_4data cm_4cal
1203	</div>
1204
1205
1206
1207
1208
1209
1210	</div>
1211
1212	</div>
1213
1214
1215
1216	<div id="tagline">Produced by IDLdoc 2.0.</div>
1217
1218	</div>
1219
1220	</body>
1221	</html>

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