y=0 line is added to my plot

Question

Håkon Bye 2019-5-14

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/461983-y-0-line-is-added-to-my-plot

评论： KSSV 2019-5-14

Hi

I'm currently trying to plot data exported from LTspice. However, when i use the "plot" function MATLAB adds the y=0 line as part of the plot. This does not happen when i use scatter and excatly the same settings. Here is a picture of the problem, and I've attached my code as well.

Thanks in advance!

data=csvread('deptesttest.csv',1,0);
dataus=data(:,1).*1e6;
% yyaxis left
plot(dataus(:,1),data(:,2).*1e-3,'--or','LineWidth',3);
set(gca,'FontSize',25);%axis font size
xlabel('time [\muS]','FontSize',25)
ylabel('Switching losses[W]','FontSize',25)
title('Current and power through switch during DP testing','FontSize',30)
axis ( [ 75.5 75.7 -10 140])
% yyaxis right
% plot(dataus(:,1),data(:,4),'LineWidth',3);
% legend('Losses MOSFET','Current MOSFET','FontSize',25)
% ylabel('Drain current MOSFET [A]','FontSize',25)
% axis ( [ 75 76 -10 140])

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KSSV 2019-5-14

It seems your data has those values also.

Håkon Bye 2019-5-14

deptesttest.csv

Yes sorry, should have done that at the beginning. Here is the csv file im using. Thanks a lot

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Answer 1

KSSV 2019-5-14

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/461983-y-0-line-is-added-to-my-plot#answer_374928

在 MATLAB Online 中打开

data=csvread('deptesttest.csv',1,0);
data(data(:,2)==0,:)=[];
dataus=data(:,1).*1e6;
% yyaxis left
plot(dataus(:,1),data(:,2).*1e-3,'--or','LineWidth',3);
set(gca,'FontSize',25);%axis font size
xlabel('time [\muS]','FontSize',25)
ylabel('Switching losses[W]','FontSize',25)
title('Current and power through switch during DP testing','FontSize',30)
axis ( [ 75.5 75.7 -10 140])