Continuous Loop operation with conditional statements in table and then calculation

2020 12 28
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更新时间：2020 12 29
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I have a table that I brought into Matlab (165185x13 table), and it contains position function and time fucntion which is discontinuous and I'm trying to run a function in which it will take values when time difference is 1 and will calculate difference between last and first postion value with respect to time function. Again loop should be restarted when after discontinuous time difference will again one and respective position difference should be added to previous value.
for eg. position value calculation = (481-464)+(2272-2244)+......
I couldn't get the logic how can I do it.
Thanks in advance

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Stephen23
Stephen23 2020-12-28
编辑：Stephen23 2020-12-28
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Ran in:
No need to use a loop:
T = [1317;1327;1342;1390;1391;1392;1393;1446;1453;1464;1491;1607;1608;1609];
D = diff([false;diff(T)==1;false]);
B = find(D>0);
E = find(D<0);
P = [41.84;64.97;129.8;464.6;470.6;476.4;481.8;539.0;555.9;604.3;801.2;2245;2259;2273];
N = sum(P(E)-P(B))
N = 45.2000
For comparison:
(481.8-464.6)+(2273-2245)
ans = 45.2000

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Ashwini More
Ashwini More 2020-12-28
Thank you Stephen for your answer!
but I want to add that attached picture is just for example, I want to do this process for entire table (165185x13 table). again I tried your code in my existing code but there is error as undefined variable for 'diff' command.
Stephen23
Stephen23 2020-12-29
Because you did not upload any data I used simple numeric vectors P and T. Of course you will need to replace them with the appropriate variables of your table.

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