# Counting lines on the y axis

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Eliot Sperling el 7 de Feb. de 2018
Comentada: Jan el 16 de Feb. de 2018
Hey, I want to count the lines on the y axis using the variables (A,B,C). Does anyone have a algorithm to do this with Matlab 2015?
Thanks
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Jan el 7 de Feb. de 2018
The question is not clear. Which lines on what kind of y axis? And how do 3 variables, especially with the names A,B,C help to solve this?

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### Respuestas (4)

abuzer el 7 de Feb. de 2018
hi, Convert your data to binary image, and than you can count edges.
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Eliot Sperling el 14 de Feb. de 2018
Hey, I want the algorithm to do it automatically
Jan el 14 de Feb. de 2018
@Eliot: Even if you do it automatically, the question is still not clear.

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Eliot Sperling el 15 de Feb. de 2018
Hey, I have three variables, A, B, C. each variable is a long list of numbers on Excel. If I plot these variables, they have let's say four y axis lines, the lines go up on the y axis. do you know a algorithm that automatically out the vertical y axis lines and then display it. Example, x=4 if there are 4 lines.
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Jan el 16 de Feb. de 2018
@Eliot: This is not clear: "each variable is a long list of numbers on Excel". If they are "on Excel", your question is off-topic in a Matlab forum. I assume, that it does not matter, if the "list" (maybe a "vector"?) is "long". But it does matter, what "they have let's say four y axis lines" means. Unfortunately this detail is not explained.

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Eliot Sperling el 15 de Feb. de 2018
remember, i have matlab 2015
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Jan el 16 de Feb. de 2018
@Eliot: Please do not post information, which helps to understand the question, in the section for answers. Insert the to the original question, where the readers expect to find all required details.

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Star Strider el 15 de Feb. de 2018
I still have no idea what you’re asking.
See if one of these works for you:
x = 1:10;
y = rand(1, 10);
figure(1)
plot(x, y)
ytix = get(gca, 'YTick') % Values Of Y-Ticks
ytixnumber = numel(ytix) % Number Of Y-Ticks
figure(2)
plot(x, y)
ytix = get(gca, 'YTick'); % Values Of Y-Ticks
newytix = linspace(min(ytix), max(ytix), 4); % Define New Values For Y-Ticks, Set Number Of Y-Ticks To 4
newytixlabels = regexp(sprintf('%.2f\n',newytix), '\n','split'); % Format New Values For Y-Ticks
set(gca, 'YTick',newytix, 'YTickLabel',newytixlabels(1:end-1)) % Set New Values & Labels For Y-Ticks
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