y=0 line is added to my plot

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])

[Alex Mcaulley]

Attach data variable in a mat file to see what is happening

[KSSV]

It seems your data has those values also.

[Håkon Bye]

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

Answer 1

[KSSV]

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])

[Håkon Bye]

thank you so much!! I've been struggeling with this for several hours now. What exactly does this "data(data(:,2)==0,:)=[];" line do in pseudocode?

[KSSV]

That line removes the data which have y value (second column of data) zero.