# How do I plot horizontal time intervals and ignore others to produce a non continous dashed line plot?

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Commented: Star Strider on 1 Feb 2023
I have this code that produces this code below
tTime =[0.0547083333333333 0.0553541666666667 0.0587500000000000 0.0599375000000000 0.0632291666666667 0.0646458333333333 0.0680000000000000 0.0696666666666667 0.0729375000000000 0.0746875000000000 0.0780000000000000 0.0798333333333333]
tTime = 1×12
0.0547 0.0554 0.0587 0.0599 0.0632 0.0646 0.0680 0.0697 0.0729 0.0747 0.0780 0.0798
CQ_HC = [0.159793814432991 0.265116279069768 0.296943231441047 0.337552742616036 0.345679012345677 0.363636363636362]
CQ_HC = 1×6
0.1598 0.2651 0.2969 0.3376 0.3457 0.3636
figure;
x = tTime(1:2:end); % every 2 elements of B
y = CQ_HC; % A is y-axis
plot(x,y')
xlim([0 max(tTime)])
ylim([0 0.6])
However I dont want a continues line. Every 2 element in tTime corresponds to an element in CQ_HC.
what I want:
every two element in tTime will be a line (so first point the begining of the line and second point the end of the line). and since the x axis is a time axis, between every pair if there is no corresponding value in CQ_HC it
stay blank. in that way the plot will not be a continues line. Any ideas?
Dyuman Joshi on 30 Jan 2023
"(so first point the begining of the line and second point the end of the line)"
It's not clear what this means.
Do you want to plot lines with x values taken in pair -
1 > consequetively like x(1)-x(2), x(3)-x(4), x(5)-x(6) ...
2 > or from both ends like x(1)-x(12), x(2)-x(11), x(3)-x(10) ...
If not any of 1 or 2, then mention specifically.

Star Strider on 30 Jan 2023
Try this —
tTime =[0.0547083333333333 0.0553541666666667 0.0587500000000000 0.0599375000000000 0.0632291666666667 0.0646458333333333 0.0680000000000000 0.0696666666666667 0.0729375000000000 0.0746875000000000 0.0780000000000000 0.0798333333333333];
CQ_HC = [0.159793814432991 0.265116279069768 0.296943231441047 0.337552742616036 0.345679012345677 0.363636363636362];
x = reshape(tTime,2,[]); % Reshape To (2x6) Matrix
y = [1;1]*CQ_HC; % Create As (2x6) Matrix
figure;
plot(x, y, 'LineWidth',2)
xlim([0 max(tTime)])
ylim([0 0.6])
To plot them all ion the same color, specify the color. I used 'LineWidth',2 so the lines would be visible. Change that as necessary.
.
##### 2 CommentsShowHide 1 older comment
Star Strider on 1 Feb 2023
As always, my pleasure!

Cris LaPierre on 30 Jan 2023
You need to make each 'line' its own series. Do this by reshaping your data so each time interval is in its own column.
tTime =[0.0547083333333333 0.0553541666666667 0.0587500000000000 0.0599375000000000 0.0632291666666667 0.0646458333333333 0.0680000000000000 0.0696666666666667 0.0729375000000000 0.0746875000000000 0.0780000000000000 0.0798333333333333]
tTime = 1×12
0.0547 0.0554 0.0587 0.0599 0.0632 0.0646 0.0680 0.0697 0.0729 0.0747 0.0780 0.0798
CQ_HC = [0.159793814432991 0.265116279069768 0.296943231441047 0.337552742616036 0.345679012345677 0.363636363636362]
CQ_HC = 1×6
0.1598 0.2651 0.2969 0.3376 0.3457 0.3636
x = reshape(tTime,2,[])
x = 2×6
0.0547 0.0587 0.0632 0.0680 0.0729 0.0780 0.0554 0.0599 0.0646 0.0697 0.0747 0.0798
y = [CQ_HC;CQ_HC]
y = 2×6
0.1598 0.2651 0.2969 0.3376 0.3457 0.3636 0.1598 0.2651 0.2969 0.3376 0.3457 0.3636
figure;
plot(x,y)
xlim([0 max(tTime)])
ylim([0 0.6])
Thank you!

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