Error when adding multiple legends to graph

17 次查看（过去 30 天）
birdnerd007
birdnerd007 2020-4-25
评论： Star Strider 2020-4-25
Hello, I am trying to get a legend for the 10 tests I performed, but I am getting the error:
Error using legend (line 279)
Invalid argument. Type 'help legend' for more information.
This is my code:
xposition=(1:4:40);
yposition=zeros(length(xposition),1)+20;
pointsize = 15;
scatter(xposition, yposition, pointsize, HIT, 'filled')
axis([0,40, 0,40]);
grid on
colorbar
colormap("jet")
barnone=colorbar;
set(get(barnone,'Title'),'String','Hardness')
xlabel('X Axis Position (µm)')
ylabel('Y Axis Position (µm)')
q=[HIT(1);HIT(2);HIT(3);HIT(4);HIT(5);HIT(6);HIT(7);HIT(8);HIT(9);HIT(10)];
legend(q,'Test 1', 'Test 2', 'Test 3','Test 4', 'Test 5', 'Test 6', 'Test 7','Test 8', 'Test 9', 'Test 10');
What am I doing incorrectly? Thanks for your help!
  7 个评论
显示 5更早的评论
birdnerd007
birdnerd007 2020-4-25
dqb - That's exactly what I'm looking for; just one issue, only one blue dot appears as opposed to each of the colors corresponding to each test.
Walter - my apologies, I am still learning this stuff. I was hoping when I used the legend feature and calling my hardness, that it would allow me to name each test in the array. Again, I am probably not making sense because I still learning. Thanks for understanding.
birdnerd007
birdnerd007 2020-4-25
dqb - Do you know how I can get each color of dot to correspond with Test 1, Test, 2, etc? I appreciate your help.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2020-4-25
The only way to do what you want is to plot each ‘HIT’ value individually in a for loop:
hold on
for k = 1:numel(HIT)
q(k) = scatter(xposition(k), yposition(k), pointsize, HIT(k), 'filled');
end
hold off
then this works:
legend(q,'Test 1', 'Test 2', 'Test 3','Test 4', 'Test 5', 'Test 6', 'Test 7','Test 8', 'Test 9', 'Test 10', 'Loccation','N', 'NumColumns',2)
  2 个评论
birdnerd007
birdnerd007 2020-4-25
You've been absolutely amazing today! Thanks for all of your help. I'm learning so much. Thank you again.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Legend 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by