CODEWITHSUNDEEP
matlablabelcontour
user3767071
user3767071

Reputation: 109

Plotting data labels within lines in Matlab

My question is similar to the post: matlab curve with label

I have some data (acquired using a function too long to show here), which gives me 2 arrays: Nv4 (337x1) and t (337x1) and I want to plot 'a=40' on the plot line. I should be able to use contour label, but I need to convert my data as matrix format first. The post above gives a link to explain how to convert our data, unfortunately the link has expired and I have no idea how I should convert my data to. An example would be useful !

I'm posting this as a new question because I don't have enough reputation to post a comment

Upvotes: 3

Views: 13154

Answers (1)

LowPolyCorgi
LowPolyCorgi

Reputation: 5188

I guess there is another way, simply with text. Here is a sample:

% Create a sample curve
x = 1:337;
y = sqrt(x);
plot(x,y);

% Define position to display the text
i = round(numel(x)/2);

% Get the local slope
d = (y(i+1)-y(i))/(x(i+1)-x(i));
X = diff(get(gca, 'xlim'));
Y = diff(get(gca, 'ylim'));
p = pbaspect;
a = atan(d*p(2)*X/p(1)/Y)*180/pi;

% Display the text
text(x(i), y(i), 'a=40', 'BackgroundColor', 'w', 'rotation', a);

And here is the result:

enter image description here

Best,

Upvotes: 10

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