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How do I read a 5-D data structure (of type double) in matlab? I have loaded the data in matlab and it says 5-D double. How do I read it afterwards
With the current information I cannot say much, but usually this is a good first try:
In matlab navigate to the file, right click on it and choose import data.
The import wizard is quite powerful so you have a good chance to get the data you need from that. Afterwards you may need to try help reshape if it does not have the right dimensions yet.
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I need to open and visualize a binary file in HDF5 format with Matlab.
Matlab has support for hdf5 files.
To get information about the data structure stored in a specific hdf5 file you can use hdf5info function:
h5info = hdf5info('/path/to/file.hdf5');
Once you have the information, you can use it to read the data from the file unsing hdf5read:
data = hdf5read(h5info);
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I want to save result to to_file block in model matlab
just I want to know what is difference between array and timeseries in save format field.
Lets start from array - it's easiest thing. If you use To File or To Workspace block with array options it writes to file just column of values of your variable.
If you use Timeseries it writes values in timeseries format. This structure consist of several fields. Main of them are Time and Data. So you get not only values but times corresponded to this data! Furthermore it contain some additional information like interpolation method and other (see it in help).
When I have to use Array and when Timeseries?
It's clear that if time moments important to you you need to use Timeseries. For example if your simulation uses variable time step then data will not be uniformly distributed.So it's helpful to get times too.
Using an array is useful if times of data is not important. For example if I save from Enabled subsystem only 1 value of my variable.
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How should I solve my equations in Perl?
I know binary search is one solution (and perhaps pretty fast for my equations) but I would like to know if there is a ready to use solutions such as math packages or libraries so that I can use them instead of implementing my own solver?
NOTE:
This is, find x for a given y.
The functions are strictly increasing
The equations usually look like: y = a + b*sqrt(x) + b*x or y = sqrt(a*(x-b)**2*(x-c)/(x-d))
Please don't complain that "this is off topic" or "you should ask this in http://math.stackexchange.com". I want to see this problem from the programming point of view, particularly in Perl!
Have you considered using libraries? There's Math::LP, for instance.
See the Perl and Math tutorial from PerlMonks for more info.
Search for symbolic math on MetaCPAN. Lots of interesting looking options.
https://metacpan.org/search?q=symbolic+math
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How can I test for the independence between two random variable given another one(i.e. whether P(A|C)=P(A|C,B) or not?) using available samples. in other words, I just have 1000 samplesf for 3 random variables generated by bntoolbox on Matlab and now I wanna test for CI between arbitrary random variables.
I've read something about Fisher's method but honestly don't understand it.
Thanks is advance.
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I'm new on Matlab. I don't know how to load .txt file end then open it to start work. The file is composed by 1 column with over 10.000 elements. I'm going to open it and then to deleted some elements, these deleted elements must be more little than a fixed value, how can I do it.
Thank you very much for your time.
Mario
Read the following part of the user guide: http://www.mathworks.co.uk/help/techdoc/import_export/br5s7ig.html
or use the MATLAB editor if you want to do it interactively:
edit(textfilename)