How to plot time from 0-24?

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Ara el 19 de Jun. de 2024
Comentada: Ara el 19 de Jun. de 2024
Dear All,
I have time :
• Description:Time of GPS measurement (GPS seconds)
• Data Type: double
• Units: s
• Valid Range: 0, 99999
How can I plot it from 0-24 UT and LT?
Best,
Ara
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Ayush Singh el 19 de Jun. de 2024
Hello Ara
To plot GPS time in both Universal Time (UT) and Local Time (LT), you need to convert the GPS time to hours and then adjust for the local time zone difference from UT. MATLAB makes these conversions straightforward.
I am assuming you have a vector of GPS times in seconds and want to plot some corresponding data, here's how you could do it:
1. Convert GPS Time to Hours
First, convert your GPS time from seconds to hours to make it easier to plot on a 0-24 hour scale.
gpsTimeSeconds = ...; % Your GPS time data here
gpsTimeHours = gpsTimeSeconds / 3600; % Convert seconds to hours
Determine the offset of your local time zone from UT. For example, if you are in Eastern Daylight Time (EDT), the offset is -4 hours from UT.
localTimeOffset = -4; % Example for EDT
localTimeHours = gpsTimeHours + localTimeOffset;
% Handle wrapping around 24 hours
localTimeHours = mod(localTimeHours, 24);
3. Plotting
Now, you can plot your data against both UT and LT. Assuming you have a vector `data` that corresponds to the measurements taken at the GPS times:
data = ...; % Your data corresponding to the GPS times
% Plot UT
subplot(2, 1, 1); % Create a subplot for UT
plot(gpsTimeHours, data);
xlabel('Time (UT)');
ylabel('Measurement');
title('Measurement vs. Universal Time');
xlim([0, 24]);
grid on;
% Plot LT
subplot(2, 1, 2); % Create a subplot for LT
plot(localTimeHours, data);
xlabel(['Time (LT, offset ' num2str(localTimeOffset) ' hrs)']);
ylabel('Measurement');
title('Measurement vs. Local Time');
xlim([0, 24]);
grid on;
This code will generate a figure with two subplots: one plotting your data against Universal Time and the other against Local Time.
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Ara el 19 de Jun. de 2024
I have a vector column for S4 and for Time as well. Here is what I plotted.
plot (time/3600,S4);
Ara el 19 de Jun. de 2024
Please see below the data to provide a picture of my data that I am analysing it.
Here is S4:
NaN
NaN
NaN
NaN
0.0632044002413750
0.0632044002413750
0.0632044002413750
0.0632044002413750
0.0632044002413750
0.0632044002413750
0.0632044002413750
0.0632044002413750
0.0632044002413750
0.0632044002413750
0.0612583011388779
0.0612583011388779
Here is Time:
1395965920.00000
1395965921.00000
1395965922.00000
1395965923.00000
1395965925.00000
1395965926.00000
1395965927.00000
1395965928.00000
1395965929.00000
1395965930.00000
1395965931.00000
1395965932.00000
1395965933.00000
1395965934.00000
1395965935.00000
1395965936.00000
1395965937.00000
1395965938.00000
1395965939.00000
1395965940.00000
1395965941.00000
1395965942.00000
1395965943.00000
1395965944.00000
1395965945.00000

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