X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fchart.h;h=f2c9e501471151cc7282864f05bda72748070e4f;hb=5156fa5a8323a16f6b4bbc8950221cdc1d0e023d;hp=d22c394fdb21a0a21864fcaa26c5c24b5ec5d079;hpb=5501903810bcbae487b12bc44d9cbedf29644d96;p=pspp-builds.git

diff --git a/src/chart.h b/src/chart.h
index d22c394f..f2c9e501 100644
--- a/src/chart.h
+++ b/src/chart.h
@@ -77,6 +77,7 @@ int  chart_initialise(struct chart *ch);
 void chart_finalise(struct chart *ch);
 
 
+double chart_rounded_tick(double tick);
 
 void chart_write_xlabel(struct chart *ch, const char *label);
 void chart_write_ylabel(struct chart *ch, const char *label);
@@ -118,10 +119,19 @@ struct normal_curve
 void histogram_write_legend(struct chart *ch, const struct normal_curve *norm);
 
 
+/* Plot a gsl_histogram */
 void histogram_plot(const gsl_histogram *hist, const char *factorname,
 		    const struct normal_curve *norm, short show_normal);
 
 
+/* Create a gsl_histogram and set it's parameters based upon 
+   x_min, x_max and bins. 
+   The caller is responsible for freeing the histogram.
+*/
+gsl_histogram * histogram_create(double bins, double x_min, double x_max) ;
+
+
+
 
 
 struct slice {
@@ -158,6 +168,7 @@ void chart_datum(struct chart *ch, int dataset, double x, double y);
 
 
 
+
 enum CHART_DIM
   {
     CHART_DIM_X,