Merge pull request #359 from plotly/downsampling_data_for_streamtube_reducing_time_elapsed

reduce taking time for streamtube function

Author: gilbertogalvis

plotly/plotlyfig_aux/core/updateData.m

@@ -19,6 +19,8 @@
             updateLineseries(obj, dataIndex);
         elseif strcmpi(obj.PlotOptions.TreatAs, 'ezpolar')
             updateLineseries(obj, dataIndex);
+        elseif strcmpi(obj.PlotOptions.TreatAs, 'streamtube')
+            updateStreamtube(obj, dataIndex);
         end
 
     %-update plot based on plot call class-%

plotly/plotlyfig_aux/handlegraphics/updateStreamtube.m

@@ -0,0 +1,156 @@
+function obj = updateStreamtube(obj, surfaceIndex)
+if strcmpi(obj.State.Plot(surfaceIndex).Class, 'surface')
+    updateSurfaceStreamtube(obj, surfaceIndex)
+end
+end
+
+function updateSurfaceStreamtube(obj, surfaceIndex)
+
+%-AXIS INDEX-%
+axIndex = obj.getAxisIndex(obj.State.Plot(surfaceIndex).AssociatedAxis);
+
+%-CHECK FOR MULTIPLE AXES-%
+[xsource, ysource] = findSourceAxis(obj,axIndex);
+
+%-SURFACE DATA STRUCTURE- %
+image_data = get(obj.State.Plot(surfaceIndex).Handle);
+figure_data = get(obj.State.Figure.Handle);
+
+%-AXIS DATA-%
+eval(['xaxis = obj.layout.xaxis' num2str(xsource) ';']);
+eval(['yaxis = obj.layout.yaxis' num2str(ysource) ';']);
+
+%-------------------------------------------------------------------------%
+
+%-surface xaxis-%
+obj.data{surfaceIndex}.xaxis = ['x' num2str(xsource)];
+
+%-------------------------------------------------------------------------%
+
+%-surface yaxis-%
+obj.data{surfaceIndex}.yaxis = ['y' num2str(ysource)];
+
+    
+%---------------------------------------------------------------------%
+
+%-surface type-%
+obj.data{surfaceIndex}.type = 'surface';
+
+%---------------------------------------------------------------------%
+
+%-format x an y data-%
+ymax = 100;
+x = image_data.XData;
+y = image_data.YData;
+z = image_data.ZData;
+cdata = image_data.CData;
+
+ysize = size(x,1);
+xsize = size(x,2);
+
+if ysize > ymax
+    ystep = round(ysize/ymax);
+    x = x(1:ystep:end, :);
+    y = y(1:ystep:end, :);
+    z = z(1:ystep:end, :);
+    cdata = cdata(1:ystep:end, :);
+end 
+
+if isvector(x)
+    [x, y] = meshgrid(x,y);
+end
+
+%---------------------------------------------------------------------%
+
+%-surface x-%
+obj.data{surfaceIndex}.x = x;
+
+%---------------------------------------------------------------------%
+
+%-surface y-%
+obj.data{surfaceIndex}.y = y;
+
+%---------------------------------------------------------------------%
+
+%-surface z-%
+obj.data{surfaceIndex}.z = z;
+
+%---------------------------------------------------------------------%
+
+%-if image comes would a 3D plot-%
+obj.PlotOptions.Image3D = true;
+
+%-if contour comes would a ContourProjection-%
+obj.PlotOptions.ContourProjection = true;
+
+%---------------------------------------------------------------------%
+
+%- setting grid mesh by default -%
+% x-direction
+xmin = min(x(:));
+xmax = max(x(:));
+xsize = (xmax - xmin) / (size(x, 2)-1); 
+obj.data{surfaceIndex}.contours.x.start = xmin;
+obj.data{surfaceIndex}.contours.x.end = xmax;
+obj.data{surfaceIndex}.contours.x.size = xsize;
+obj.data{surfaceIndex}.contours.x.show = true;
+obj.data{surfaceIndex}.contours.x.color = 'black';
+% y-direction
+ymin = min(y(:));
+ymax = max(y(:));
+ysize = (ymax - ymin) / (size(y, 1)-1);
+obj.data{surfaceIndex}.contours.y.start = ymin;
+obj.data{surfaceIndex}.contours.y.end = ymax;
+obj.data{surfaceIndex}.contours.y.size = ysize;
+obj.data{surfaceIndex}.contours.y.show = true;
+obj.data{surfaceIndex}.contours.y.color = 'black';
+
+%-------------------------------------------------------------------------%
+
+%-image colorscale-%
+
+cmap = figure_data.Colormap;
+len = length(cmap)-1;
+
+for c = 1: length(cmap)
+    col = 255 * cmap(c, :);
+    obj.data{surfaceIndex}.colorscale{c} = { (c-1)/len , ['rgb(' num2str(col(1)) ',' num2str(col(2)) ',' num2str(col(3)) ')'  ]  };
+end
+
+%-------------------------------------------------------------------------%
+
+%-surface coloring-%
+obj.data{surfaceIndex}.surfacecolor = cdata;
+
+%-------------------------------------------------------------------------%
+
+%-surface name-%
+obj.data{surfaceIndex}.name = image_data.DisplayName;
+
+%-------------------------------------------------------------------------%
+
+%-surface showscale-%
+obj.data{surfaceIndex}.showscale = false;
+
+%-------------------------------------------------------------------------%
+
+%-surface visible-%
+obj.data{surfaceIndex}.visible = strcmp(image_data.Visible,'on');
+
+%-------------------------------------------------------------------------%
+
+leg = get(image_data.Annotation);
+legInfo = get(leg.LegendInformation);
+
+switch legInfo.IconDisplayStyle
+    case 'on'
+        showleg = true;
+    case 'off'
+        showleg = false;
+end
+
+obj.data{surfaceIndex}.showlegend = showleg;
+
+%-------------------------------------------------------------------------%
+
+end