x-axis value

Hello,

I need help regarding x-axis values. I need that x-axis start at 1 ns and end at 20 ns. This is my code where i have to make changes plesase tell me.

plotData = importdata('nosnoise.csv')
plotData.colheaders(1)
plotData.data(1) 
figure(1)
clf
hold on
grid minor
plot(plotData.data(:,1),plotData.data(:,2),'x-m')
plot(plotData.data(:,3),plotData.data(:,4),'x-m')
title('ESD event for the CDM')
x = linspace(0,20);
% set(gca,'FontSize',18);
xlabel('Time (ns)') 
ylabel('Voltage (V)') 
legend({'Immunity to power supply noise'})

Answer 1

[Rik]

You x-axis exponent has me believe that you already have the correct range and that your goal is to show nanoseconds instead of seconds on your x-axis (note the 10^-8 at the end of your axis).

You can do this two ways: either change the data, or change the axis ticks. The first is easier, but I chose to do the second.

plotData = importdata('nosnoise.csv')
plotData.colheaders(1)
plotData.data(1) 
figure(1)
clf
hold on
grid minor
plot(plotData.data(:,1),plotData.data(:,2),'x-m')
plot(plotData.data(:,3),plotData.data(:,4),'x-m')
title('ESD event for the CDM')
x=linspace(0,20,5);
set(gca,'XTick',x*10^-9)
set(gca,'XTickLabels',cellfun(@num2str,num2cell(x),'UniformOutput',0))
xlabel('Time (ns)') 
ylabel('Voltage (V)') 
legend({'Immunity to power supply noise'})

[Rai]

thank you for your answer but this is not working after plotting there is no axis. I am using R2015a matlab.

[Rik]

Sorry, I forgot a small adjustment. The edited answer should work.

[Rai]

thank you for your help but I need more help regarding y axis how can i change there axis according to my limits. Pleae help me

[Rik]

What exactly is the problem you're having now?