initialize magfact to 1 ... fixes logarithm chart display issues (patch from Christop...

[rrdtool-all.git] / program / src / rrd_graph.c

diff --git a/program/src/rrd_graph.c b/program/src/rrd_graph.c
index 8f5f44f90b60a7c0c560dbfd8158d5d8c14a70ca..2db9eea32970cd42e4bae824eedeaec4ee16b588 100644 (file)
--- a/program/src/rrd_graph.c
+++ b/program/src/rrd_graph.c
@@ -1,4 +1,4 @@
-/****************************************************************************
+/****************************************************************************s
  * RRDtool 1.3.9  Copyright by Tobi Oetiker, 1997-2009
  ****************************************************************************
  * rrd__graph.c  produce graphs from data in rrdfiles
@@ -855,6 +855,10 @@ int data_fetch(
             }
             im->gdes[i].data_first = 1;
 
+            /* must reduce to at least im->step
+               otherwhise we end up with more data than we can handle in the 
+               chart and visibility of data will be random */            
+            im->gdes[i].step = max(im->gdes[i].step,im->step);
             if (ft_step < im->gdes[i].step) {
                 reduce_data(im->gdes[i].cf_reduce,
                             ft_step,
@@ -1520,7 +1524,7 @@ int print_calc(
                 }
             }           /* prepare printval */
 
-            if ((percent_s = strstr(im->gdes[i].format, "%S")) != NULL) {
+            if (!im->gdes[i].strftm && (percent_s = strstr(im->gdes[i].format, "%S")) != NULL) {
                 /* Magfact is set to -1 upon entry to print_calc.  If it
                  * is still less than 0, then we need to run auto_scale.
                  * Otherwise, put the value into the correct units.  If
@@ -1534,7 +1538,7 @@ int print_calc(
                     printval /= magfact;
                 }
                 *(++percent_s) = 's';
-            } else if (strstr(im->gdes[i].format, "%s") != NULL) {
+            } else if (!im->gdes[i].strftm && strstr(im->gdes[i].format, "%s") != NULL) {
                 auto_scale(im, &printval, &si_symb, &magfact);
             }
 
@@ -2005,7 +2009,7 @@ int draw_horizontal_grid(
                             }
                         }
                         else {
-                           sprintf(graph_label_right,im->second_axis_format,sval);
+                           sprintf(graph_label_right,im->second_axis_format,sval,"");
                         }        
                         gfx_text ( im,
                                X1+7, Y0,
@@ -3706,15 +3710,19 @@ rrd_info_t *rrd_graph_v(
     rrd_info_t *grinfo;
     rrd_graph_init(&im);
     /* a dummy surface so that we can measure text sizes for placements */
+     old_locale = setlocale(LC_NUMERIC, NULL);
+     setlocale(LC_NUMERIC, "C");
     
     rrd_graph_options(argc, argv, &im);
     if (rrd_test_error()) {
+        setlocale(LC_NUMERIC, old_locale); /* reenable locale */
         rrd_info_free(im.grinfo);
         im_free(&im);
         return NULL;
     }
 
     if (optind >= argc) {
+        setlocale(LC_NUMERIC, old_locale); /* reenable locale */
         rrd_info_free(im.grinfo);
         im_free(&im);
         rrd_set_error("missing filename");
@@ -3722,6 +3730,7 @@ rrd_info_t *rrd_graph_v(
     }
 
     if (strlen(argv[optind]) >= MAXPATH) {
+        setlocale(LC_NUMERIC, old_locale); /* reenable locale */
         rrd_set_error("filename (including path) too long");
         rrd_info_free(im.grinfo);
         im_free(&im);
@@ -3736,6 +3745,7 @@ rrd_info_t *rrd_graph_v(
     }
 
     rrd_graph_script(argc, argv, &im, 1);
+    setlocale(LC_NUMERIC, old_locale); /* reenable locale */
     if (rrd_test_error()) {
         rrd_info_free(im.grinfo);
         im_free(&im);
@@ -3840,6 +3850,7 @@ void rrd_graph_init(
     im->maxval = DNAN;
     im->minval = 0;
     im->minval = DNAN;
+    im->magfact = 1;
     im->prt_c = 0;
     im->rigid = 0;
     im->rendered_image_size = 0;