Unexpected elements appear when using yyaxis plot

When I am using yyaxis to plot different lines on both axis, something went wrong. After activating the right axis, I firstly add a line and everything went on just fine. But as I was trying to add more lines, there appeared some unexpected 'scatter's at the two endpoints. I have no idea what happened. Is there a limit of the number of lines that can be plotted on one axis?

yyaxis left
x_draw=(-3+1.5/14):3/14:(0-1.5/14);
% pl=plot(x_draw,count,'linewidth',5,'color',[65,105,225]./255);
a=area(x_draw,count,'linewidth',5,'facecolor',[65,105,225]./255,'edgecolor',[65,105,225]./255);
a.FaceAlpha=0.2;
hold on
x_star4=log10(0.02);
x_star5=log10(0.04);
x_star6=log10(0.08);
plot([x_star4 x_star4],[0 pro_4*15000],'Color',[178 34 34]./255,'linewidth',3,'linestyle','-')
plot([x_star5 x_star5],[0 pro_5*15000],'Color',[178 34 34]./255,'linewidth',3,'linestyle','-')
plot([x_star6 x_star6],[0 pro_6*15000],'Color',[178 34 34]./255,'linewidth',3,'linestyle','-')
plot([-x_star4 0],[pro_4*15000 pro_4*15000],'Color',[178 34 34]./255,'linewidth',3,'linestyle','-')
plot([-x_star5 0],[pro_5*15000 pro_5*15000],'Color',[178 34 34]./255,'linewidth',3,'linestyle','-')
plot([-x_star6 0],[pro_6*15000 pro_6*15000],'Color',[178 34 34]./255,'linewidth',3,'linestyle','-')

[Jonas]

without having all your variables available, it looks like the probblem are the last three lines and the fact, that your x axis is logarithmic.. there you want to draw a horizontal line from e.g. the negative value -x_star4 (which is a value between -10 and -1) up to the value 0. you can not draw in the area <=0 in a logarithmic plot. what did you want to achieve there?

for further help it would be nice to have all your variables available, you can attach dem here using a mat file e.g.

[Adam Danz]

What part of the image shows this: " some unexpected 'scatter's at the two endpoints" ? What end points? What scatter?

[Divyanshu]

Can you provide more information about the variables used in the code and also indicate which part of plot indicate that "scatter's at the two endpoints"?