Octave 上的颜色条比例错误
我尝试创建一个图表，其中有一条线的颜色基于第三个变量。 为此，我使用散点图。 当我向该图中添加颜色条时，颜色条上报告的数据范围从零到最大值变化。 这是错误的，数据不是从零开始，因此图表上可视化的颜色是错误的。 这是我的代码：
load data;
figure(1);
plot(brd_1(:,1), brd_1(:,2), "color", "k");
hold;
axis([x_range(1), x_range(2), y_range(1), y_range(2)], "equal", "off");
plot(brd_2(:,1), brd_2(:,2), "color", "k");
colormap("viridis");
scatter(pnt_rl(:,1), pnt_rl(:,2), 8, v*3.6, "filled");
colorbar("EastOutside");
title("Speed [km/h]");
这里有尝试此代码所需的文件“数据”的链接：
I try to create a graph in which there is a line with colour based on a third variable.
To do that, I'm using scatter plot.
When I add colorbar to this plot, the data range reported on the colorbar vary from zero to max value.
This is wrong, the data don't start from zero, and so the color visualized on the graph are wrong.
This is my code:
load data;
figure(1);
plot(brd_1(:,1), brd_1(:,2), "color", "k");
hold;
axis([x_range(1), x_range(2), y_range(1), y_range(2)], "equal", "off");
plot(brd_2(:,1), brd_2(:,2), "color", "k");
colormap("viridis");
scatter(pnt_rl(:,1), pnt_rl(:,2), 8, v*3.6, "filled");
colorbar("EastOutside");
title("Speed [km/h]");
Here there is the link of the file "data" needed to try this code:
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我的 scatter3 比例也错误。对我来说，做了以下工作：
caxis([地板(vmin), ceil(vmax)])。
看来这里需要整数。
这也有效： caxis([ single(min(v(:))), single(max(v(:)))])
I also had a wrong scale for scatter3. For me worked the following:
caxis([floor(vmin), ceil(vmax)]).
It seems integers are needed here.
This also worked: caxis([ single(min(v(:))), single(max(v(:)))])