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Show temperature differences in a dataset
Here you can see the difference between minimum and maximum taken over the 3rd dimension, which I can only assume is time? ...

mer än 5 år ago | 0

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question on months&days in 2012
Now that you've basically solved it, here is my (hopefully correct) solution. Note that for scalars you can write && instead of ...

mer än 5 år ago | 0

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datenum to UTC?
Yes, use datetime instead of datenum. t = datetime('10-Oct-2013 15:59:00','timezone','-04:00') t_unix = posixtime(t)...

mer än 5 år ago | 0

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shifting time in timetable
Simply shifting the time without affecting the data TT.Time = dateshift(TT.Time,'start','day') Changing the format (hidi...

mer än 5 år ago | 0

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Summary Statistics Table by group
You need to pass the table as input to *grpstats*. Assuming that *dsa* is a cell array with grouping variables, then change your...

mer än 5 år ago | 0

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how to use imshow for this array?
It's not imshow but you could use imagesc instead imagesc(out_map) If you really want to use imshow, then B = mat2g...

mer än 5 år ago | 1

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Answered
Generate data from a image plot with colour code as reference.
I'd approach this by the following steps. load image with axes and everything: I = imread('FileName.png'); imshow(I) ...

mer än 5 år ago | 0

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Answered
exstract consecutive duplicate element of array
A is your matrix. This line removes duplicates: A([false diff(A)==0]) = []; Or you could expand it to this, given your v...

mer än 5 år ago | 0

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Subscript indices must either be real positive integers or logicals.
It's hard to tell without having some input, but these types of lines are definitely wrong: ra(2i)=1; *i* is being inter...

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Answered
Reading pixels of an image
Indexing works by going through the matrix column by column, so that would be (1,5) in your example. Don't be afraid to test thi...

mer än 5 år ago | 1

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How would i display a matrix as a graph?
Here's a custom plot type I made. It may look upside down, but the value on the y-axis denotes the row number. The "peak value" ...

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Answered
Surface plot of vectors with x and y vectors as index
After meshgrid you need to interpolate. For example z = griddata(xx, yy, zz, x, y) Then you can plot surf(x, y, ...

mer än 5 år ago | 0

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Based on Column 3 values how to get specific column 1 values?
fid = fopen('sample.txt') out = textscan(fid,'%f%f%f','headerlines',1); fclose(fid) A = cell2mat(out); id0 = f...

mer än 5 år ago | 1

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Answered
Draw a discontinuous line
Do not use indexed variable names. Build a 2xn matrix instead. x = 0.7000 1.8000 1.3000 2.2000 y = ...

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Answered
plotting colorcoded points on a map
Try this: scatterm(long_lat(:,2),long_lat(:,1),[],sen_s) I assume sen_s is the variable you want colorcoded. Adapt the c...

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Answered
Plot of maximum value of chosen column in matrix
In this case you could simply find the max in each column in one go [vm,idx] = max(M); %maximum of each column plot(t,M); ...

mer än 5 år ago | 0

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Help to understand Matlab code
[m n ~] = size(im) ~ basically means "omit this output", and is totally useless in this context. It is useful in other case...

mer än 5 år ago | 1

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Answered
how to find time difference between 2 times , in milliseconds.
Just work with duration format. t={'18:42:45.813' '18:42:46.028' '18:42:46.139' '18:42:46.359' '18:42:46.463' ...

mer än 5 år ago | 1

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Answered
Seperate the data of a table
Just use logical indexing T{strcmp(T{:,1},'Fossil Gas'),end} The line strcmp(T{:,1},'Fossil Gas') returns a logi...

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Answered
Plot of confidence interval with fill
Nothing wrong, you just happen to have very narrow confidence bounds. <</matlabcentral/answers/uploaded_files/137818/untitle...

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How to make a scatterplot
Let Y be your matrix with data, you can simply make a scatterplot like this: x = 61:70; h = plot(x,Y,'bo','markerfaceco...

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Answered
how to read .dat file using txtscan ?
You can use readtable since the data is tabular. T = readtable('AE33_AE33-S02-00184_20170102.dat','headerlines',8) ...g...

mer än 5 år ago | 1

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Answered
How to make a 2-D colormap with coordinates
Use a surface object surf(lon, lat, z) The data must be gridded, so you may have grid the data like this [LON,LAT]...

mer än 5 år ago | 1

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Squared heatmap with random transition; animation
You could also use scatter with a superlarge markersize. figure; colormap([1 1 1;1 1 0;1 0 0;0 0 1;0 1 0]); [...

mer än 5 år ago | 1

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Answered
how could avoid too have loop in big data
You can use findgroups/splitapply or put the data in a table and use varfun or grpstats. Upload some data if you need code. ...

mer än 5 år ago | 1

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Answered
How to make a graph that shows evolution of a variable in time through different depths in a lake.
Just create a surface object. d = is your depth (1x38) t = is your time (1x3705) Te = is your temperature (3705...

mer än 5 år ago | 0

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Answered
How can make arrows into the line step by step?
What you see on the figure is a quiver3 plot, where the arrows describe velocity. You did not provide any velocity data, but you...

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how to handle variable time stamped long time series data?
# Load data # Put data in two timetables # Use synchronize # Step 1-3 did not work? Upload the data.

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colour map scatter with multiple groups / variables
I would probably just create a new axes for each new scatter object. Each object then scales automatically and the same method w...

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Answered
Interpolate gridded matrix row-wise
Normally you could achieve this easily by interpolating over rows with a function that does not extrapolate by default. I believ...

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