How to extract the Y data value from the all X value required in the plotted 2D graph in an array?

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fiteri razali 2013-3-25

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Hi all,

I have a graph plotting Y(BER value) vs X(SNR) value in 2D plot graph. I want to extract all the value of Y against its value of X in an array. anyone can help me please?

i have the code as below =============================================================================

BER2 = sum(total_bit_error)/(length(data)*iteration); figure; % BER vs SNR in linear value

hold on

plot(snr,BER,'gx-',snr,BER1,'bs-',snr,BER2,'ro-');

yticks = (0 : 0.01 :0.8);

xticks = (0 : 1 : 25);

set(gca,'YTick', yticks, 'YTickLabel', cellstr(num2str(yticks(:))) )

set(gca,'XTick', xticks, 'XTickLabel', cellstr(num2str(xticks(:))) )

grid on

xlabel('\fontname{calibri}{SNR}')

ylabel('\fontname{calibri}{BER}')

title('\fontsize{10}{BER vs SNR }')

legend('1','11','3')

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Answer 1

Image Analyst 2013-3-25

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I don't understand -- what is there to extract? And extract from what? Extract all Y? But you already have all Y in the variable called BER, and you already have all the X in the variable called SNR. So what else do you need?

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fiteri razali 2013-3-27

ok..it is like this..with this code it will plot a graph y vs x..in the graph it has 3 output which is 1,11 and 3.but then i need all the values of y from its respective value of v from the graph in array so that i can put the value in a table for further calculation...with the code it will only produce a graph.any suggestion?

Image Analyst 2013-3-27

I still don't understand. Anything that you plotted, you have the variables for. So just put those variables into a table (I don't know if that is a 2D matrix, something displayed on a GUI, or a uicontrol that is like a spreadsheet).

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