Added files in src/output

[pspp-builds.git] / src / output / charts / cartesian.h

diff --git a/src/output/charts/cartesian.h b/src/output/charts/cartesian.h
new file mode 100644 (file)
index 0000000..9f68ba1
--- /dev/null
+++ b/src/output/charts/cartesian.h
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+/* PSPP - computes sample statistics.
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   Written by John Darrington <john@darrington.wattle.id.au>
+
+   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., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA. */
+
+
+
+#ifndef CARTESIAN_H
+#define CARTESIAN_H
+
+
+enum CHART_DIM
+  {
+    CHART_DIM_X,
+    CHART_DIM_Y
+  };
+
+
+/* Write the abscissa label */
+void chart_write_xlabel(struct chart *ch, const char *label);
+
+
+/* Write the ordinate label */
+void  chart_write_ylabel(struct chart *ch, const char *label);
+
+/* Plot a data point */
+void chart_datum(struct chart *ch, int dataset UNUSED, double x, double y);
+
+/* Draw a line with slope SLOPE and intercept INTERCEPT.
+   between the points limit1 and limit2.
+   If lim_dim is CHART_DIM_Y then the limit{1,2} are on the 
+   y axis otherwise the x axis
+*/
+void chart_line(struct chart *ch, double slope, double intercept, 
+               double limit1, double limit2, enum CHART_DIM lim_dim);
+
+
+#endif