[goffice] Fix the parameters of the go_data_get_matrix_value call.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit 9aabaa4028e2132a48c067f8b0a1c6f4fd559b10
Author: Emmanuel Pacaud <emmanuel pacaud lapp in2p3 fr>
Date:   Tue Apr 21 17:01:27 2009 +0200

    Fix the parameters of the go_data_get_matrix_value call.
    
    We probably should avoid the use of get_value in this case, which is
    too costly. Why not call get_values and handle the transpose issue
    by switching the array indices ?
---
 plugins/plot_surface/gog-contour.c |    6 +++---
 plugins/plot_surface/gog-surface.c |    2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/plugins/plot_surface/gog-contour.c b/plugins/plot_surface/gog-contour.c
index e94e416..54045db 100644
--- a/plugins/plot_surface/gog-contour.c
+++ b/plugins/plot_surface/gog-contour.c
@@ -93,7 +93,7 @@ gog_contour_plot_build_matrix (GogXYZPlot const *plot, gboolean *cardinality_cha
 	for (i = 0; i < plot->rows; i++)
 		for (j = 0; j < plot->columns; j++) {
 			val = gog_axis_map_to_view (map,
-					go_data_get_matrix_value (mat, j, i));
+					go_data_get_matrix_value (mat, i, j));
 			if (fabs (val) == DBL_MAX)
 				val = go_nan;
 			else {
@@ -365,8 +365,8 @@ gog_contour_view_render (GogView *view, GogViewAllocation const *bbox)
 				y0 = gog_axis_map_to_view (y_map, i);
 				y1 = gog_axis_map_to_view (y_map, i + 1);
 			} else {
-				y0 = gog_axis_map_to_view (y_map, go_data_vector_get_value (y_vec, i - 1));
-				y1 = gog_axis_map_to_view (y_map, go_data_vector_get_value (y_vec, i));
+				y0 = gog_axis_map_to_view (y_map, go_data_get_vector_value (y_vec, i - 1));
+				y1 = gog_axis_map_to_view (y_map, go_data_get_vector_value (y_vec, i));
 			}
 			nans = 0;
 			nan = 4;
diff --git a/plugins/plot_surface/gog-surface.c b/plugins/plot_surface/gog-surface.c
index b9fda6e..88cba9b 100644
--- a/plugins/plot_surface/gog-surface.c
+++ b/plugins/plot_surface/gog-surface.c
@@ -50,7 +50,7 @@ gog_surface_plot_build_matrix (GogXYZPlot const *plot, gboolean *cardinality_cha
 
 	for (i = 0; i < plot->rows; i++)
 		for (j = 0; j < plot->columns; j++) {
-			val = go_data_get_matrix_value (mat, j, i);
+			val = go_data_get_matrix_value (mat, i, j);
 			if (plot->transposed)
 				data[j * plot->rows + i] = val;
 			else