v.pertrub: OGR support (read access)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@39897 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.perturb/main.c

@@ -1,24 +1,11 @@
 
-/*-
- * s.perturb
- * Copyright (C) 1994. James Darrell McCauley.
+/****************************************************************************
  *
- * Author: James Darrell McCauley darrell@mccauley-usa.com
- * 	                          http://mccauley-usa.com/
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * MODULE:       v.pertrub
+ * AUTHOR(S):    James Darrell McCauley darrell@mccauley-usa.com
+ * 	         http://mccauley-usa.com/
+ * PURPOSE:      
+ * COPYRIGHT:    (C) 1994-2009 by James Darrell McCauley and the GRASS Development Team
  *
  * Modification History:
  * 3/2006              added min and seed MN/SM ITC-irst
@@ -28,15 +15,20 @@
  * 0.3B <25 Feb 1995>  cleaned up 'gcc -Wall' warnings (jdm)
  * <13 Sept 2000>      released under GPL
  *
- * TODO: see code below
- */
+ *               This program is free software under the GNU General
+ *               Public License (>=v2). Read the file COPYING that
+ *               comes with GRASS for details.
+ *
+ *****************************************************************************/
 
 #include <stdlib.h>
 #include <math.h>
+
 #include <grass/gis.h>
 #include <grass/dbmi.h>
 #include <grass/vector.h>
 #include <grass/glocale.h>
+
 #include "perturb.h"
 #include "zufall.h"
 
@@ -44,8 +36,8 @@ int main(int argc, char **argv)
 {
     double p1, p2, numbers[1000], numbers2[1000];
     int (*rng) ();
-    int i, verbose;
-    int line, nlines, ttype, n, ret, seed;
+    int i;
+    int line, nlines, ttype, n, ret, seed, field;
     struct field_info *Fi, *Fin;
     double min = 0.;
     int debuglevel = 3;
@@ -59,23 +51,22 @@ int main(int argc, char **argv)
     struct GModule *module;
     struct
     {
-	struct Option *in, *out, *dist, *pars, *min, *seed;
+	struct Option *in, *out, *dist, *pars, *min, *seed, *field;
     } parm;
-    struct
-    {
-	struct Flag *q;
-    } flag;
 
     G_gisinit(argv[0]);
 
     module = G_define_module();
     G_add_keyword(_("vector"));
+    G_add_keyword(_("statistics"));
+    
     module->description =
-	_("Random location perturbations of GRASS vector points");
+	_("Random location perturbations of vector points.");
 
     parm.in = G_define_standard_option(G_OPT_V_INPUT);
-    parm.in->description = _("Vector points to be spatially perturbed");
 
+    parm.field = G_define_standard_option(G_OPT_V_FIELD_ALL);
+    
     parm.out = G_define_standard_option(G_OPT_V_OUTPUT);
 
     parm.dist = G_define_option();
@@ -91,11 +82,11 @@ int main(int argc, char **argv)
     parm.pars->type = TYPE_DOUBLE;
     parm.pars->required = YES;
     parm.pars->multiple = YES;
-    parm.pars->description =
-	_("Parameter(s) of distribution. If the distribution "
-	  "is uniform, only one parameter, the maximum, is needed. "
-	  "For a normal distribution, two parameters, the mean and "
-	  "standard deviation, are required.");
+    parm.pars->label = _("Parameter(s) of distribution");
+    parm.pars->description = _("If the distribution "
+			       "is uniform, only one parameter, the maximum, is needed. "
+			       "For a normal distribution, two parameters, the mean and "
+			       "standard deviation, are required.");
 
     parm.min = G_define_option();
     parm.min->key = "minimum";
@@ -110,15 +101,10 @@ int main(int argc, char **argv)
     parm.seed->required = NO;
     parm.seed->answer = "0";
     parm.seed->description = _("Seed for random number generation");
-
-    flag.q = G_define_flag();
-    flag.q->key = 'q';
-    flag.q->description = _("Quiet");
-
+    
     if (G_parser(argc, argv))
 	exit(EXIT_FAILURE);
 
-    verbose = (!flag.q->answer);
     min = atof(parm.min->answer);
     seed = atoi(parm.seed->answer);
 
@@ -150,10 +136,12 @@ int main(int argc, char **argv)
 
     /* Open input */
     Vect_set_open_level(2);
-    Vect_open_old(&In, parm.in->answer, "");
-
+    Vect_open_old2(&In, parm.in->answer, "", parm.field->answer);
+    
+    field = Vect_get_field_number(&In, parm.field->answer);
+    
     /* Open output */
-    Vect_open_new(&Out, parm.out->answer, 0);	/* TODO add z support ? */
+    Vect_open_new(&Out, parm.out->answer, WITHOUT_Z);	/* TODO add z support ? */
 
     Vect_hist_copy(&In, &Out);
     Vect_hist_command(&Out);
@@ -174,6 +162,9 @@ int main(int argc, char **argv)
 
 	type = Vect_read_line(&In, Points, Cats, line);
 
+	if (field != -1 && !Vect_cat_get(Cats, field, NULL))
+	    continue;
+
 	if (type & GV_POINT) {
 	    if (i >= 800) {
 		/* Generate some more random numbers */