Plotting data within a loop

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Parveen Kumar
Parveen Kumar 2019-2-14
评论： Parveen Kumar 2019-2-14
Plotting data within a loop
I have a data in four columns
x, y, t, and ID
In this formar
1st column: X1,X2,X3,X4, X5, X6, X7, X8, X9…..Xn.
2nd column: Y1,Y2,Y3, Y4, Y5, Y7, Y8, Y9…..Yn
3rd is Time: 1,2,3,1,2,1,2,3,4,1,1…..n
4th ID: 1,1,1,2,2,3,3,3,3,4,5….
So whenever ID change the time start value. I want to plot each ID separately. For example: 1 track should be for ID=1, 2ndtrack for ID=2 and so on.
This is my code:
Tr is data file.
max1=max(tr(:,h)); %h column is ID column
for s=1:max1
for r=1:g
if tr(r,h)==s
scatter(tr(r,1),tr(r,2),5, 'filled','LineWidth',0.5)
hold on
end
end
end
This code has 2 problem. First too slow. 2nd I get scatter plot and each point is different color. I can not get tracks for each ID.
  2 个评论
Parveen Kumar
Parveen Kumar 2019-2-14
Is there any better way to sort and plot them with ID values. I mean one plot for each ID value.
Parveen Kumar
Parveen Kumar 2019-2-14
Thank you for help and sharing imfornation.
Here is Data:
I want plot X,Y for as time progress (3rd) column for each value of ID (4th column). I want multiples lines for each valud of ID. Thankyou for your help.
X Y T ID
245.5854 142.0736 1 1
245.5854 142.0736 2 1
353.8233 2321.232 1 2
353.8233 2321.232 2 2
355.1186 2320.561 3 2
362.8682 3037.687 1 3
362.8682 3037.687 2 3
721.3332 3311.178 1 4
721.3332 3311.178 2 4
721.1143 3311.255 3 4
829.1324 702.0072 1 5
829.1324 702.0072 2 5
827.0101 700.621 3 5
1013.134 229.5366 1 6
1013.134 229.5366 2 6
1012.042 228.821 3 6
1242.613 1378.058 1 7
1242.613 1378.058 2 7
1242.325 1377.151 3 7
1905.737 1680.599 1 8
1905.737 1680.599 2 8
1942.877 1974.79 1 9
1942.877 1974.79 2 9
1941.808 1975.442 3 9
2236.604 665.5954 1 10
2236.604 665.5954 2 10
2235.779 667.1945 3 10
2292.883 1408.034 1 11
2292.883 1408.034 2 11
2712.549 1792.856 1 12
2712.549 1792.856 2 12
2711.623 1793.452 3 12
3340.355 335.6181 1 13
3340.355 335.6181 2 13
3442.762 569.0398 1 14
3442.762 569.0398 2 14
3441.822 569.8069 3 14
4074.356 1147.919 1 15
4074.356 1147.919 2 15
4118.562 2928.016 1 16
4118.562 2928.016 2 16
4151.829 1168.706 1 17
4151.829 1168.706 2 17
4187.846 3293.536 1 18
4187.846 3293.536 2 18
4186.573 3293.683 3 18
4241.491 3570.115 1 19
4241.491 3570.115 2 19
4315.192 639.7833 1 20
4315.192 639.7833 2 20
4313.016 640.6428 3 20
4356.717 3379.245 1 21
4356.717 3379.245 2 21
4354.655 3378.676 3 21
4588.88 949.6728 1 22
4588.88 949.6728 2 22
4588.115 950.4609 3 22
4815.942 2388.778 1 23
4815.942 2388.778 2 23
4815.923 2389.986 3 23

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采纳的回答

Bob Thompson
Bob Thompson 2019-2-14
I'm not sure if I understand exactly what you're trying to do, but here goes.
nums = unique(tr(:,h));
for i = 1:length(nums)
figure(nums(i))
plot(tr(tr(:,h)==nums(i),x),tr(tr(:,h)==nums(i),time),tr(tr(:,h)==nums(i),y),tr(tr(:,h)==nums(i),time));
end
It's probably still going to be relatively slow because you're generating 23 different figures, and any graphical requirements take a fair amount of time in MATLAB.
  5 个评论
显示 3更早的评论
Parveen Kumar
Parveen Kumar 2019-2-14
Thank you so much. This works with some modications.
I was trying to plot X and Y for given condition on ID. I wanted all plots on one figure. Time is only for legend. Again Thank you very much.
This is what I did.
nums = unique(tr(:,h));
for i = 1:length(nums)
txt=['Track=', num2str(i)];
plot(tr(tr(:,h)==nums(i),1),tr(tr(:,h)==nums(i),2), 'LineWidth', 0.5,'DisplayName', txt);
hold on
title ('Particle Tracking');
xlabel ('X-(Pixel)')
ylabel ('Y-(Pixel)')
end
hold off
legend show
Parveen Kumar
Parveen Kumar 2019-2-14
Thank you so much. This works with some modications.
I was trying to plot X and Y for given condition on ID. I wanted all plots on one figure. Time is only for legend. Again Thank you very much.
This is what I did.
nums = unique(tr(:,h));
for i = 1:length(nums)
txt=['Track=', num2str(i)];
plot(tr(tr(:,h)==nums(i),1),tr(tr(:,h)==nums(i),2), 'LineWidth', 0.5,'DisplayName', txt);
hold on
title ('Particle Tracking');
xlabel ('X-(Pixel)')
ylabel ('Y-(Pixel)')
end
hold off
legend show

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