I would like to display some information about a Simulink model, without first knowing the filename. The information will be displayed in the model itself.
Something similar, mfilename, is available for MATLAB programs. Is there an equivalent for Simulink models?
Thanks to Edric I found bdroot, which gives the system name.
Passing this to which makes Matlab find the model using it's search path.
So the solution is model_path = which (bdroot);
One problem is that if you have shadowed files this method may give the incorrect answer.
I think it may be more reliable to get the model parameter in case there is more than one matching model in your path:
model_path = get_param(bdroot, 'FileName');
I think you need gcs http://www.mathworks.com/help/toolbox/simulink/slref/gcs.html
Related
I'm working on a script to convert a Simulink library to a plain model, meaning it can be simulated, it does not auto-lock etc.
Is there a way to do this with code aside from basically copy-pasting every single block into a new model? And if it isn't, what is the most efficient way to do the "copy-paste".
I was not able to find any clues as how to approach this problem here, or on Google, or on the official documentation or on the MathWorks forum so I'm at a loss on how to proceed.
Thank you in advance!
I don't think it's possible to convert a library to a model, but you can programmatically add library blocks to models like so:
sys = 'testModel';
new_system(sys);
open_system(sys);
add_block('Simulink/Sources/Sine Wave', [sys, '/MySineWave']);
save_system(sys);
close_system(sys);
sim(sys);
You could even use the find_system command to list all the blocks in a library and then loop through them all and create a new model for each using the above code.
is there a way to find out all the block type involve in a Model, i guess it should be able with get_parameter ?
thank you
Start with find_system to get all blocks.
Get the BlockType for each and finally apply unique to get each type only once in the result.
%get the path to all blocks
all_blocks=find_system('untitled','lookundermasks','all','type','block')
%get the block type
unique(get_param(all_blocks,'BlockType'))
For the lookundermasks option, make sure to chose the option you want.
Disclaimer: I'm not a professional simulink/matlab programmer
If I've opened simulink and created a model, then i want to save it from the commandline in matlab. The save_system works, but I also want to specify a filename, for this i need to use save_system(sys, newsysname.slx)
I can't seem to find a function to get sys. How can I get the same sys as save_system() uses?
Use gcs to get the current system or bdroot to get the top-level of the model. find_system may also be useful.
need some help on this.
Currently I am doing a project on computer vision that requires me to train a new model to detect a certain object.
In this case, I am using the system provided by P. Felzenszwalb, D. McAllester, D. Ramaman and his team => Discriminatively trained deformable part models which is implemented in Matlab.
Project webpage: http://www.cs.uchicago.edu/~pff/latent/.
However I have no idea how to direct the system to use my dataset(a collection of images and annotation) which is different from the the PASCAL datasets so as to train a new model.
By directing, I meant a line of code that allows me to change the dataset the system reads from, for training a model.
E.g.
% directory for caching models, intermediate data, and results
cachedir = ['/var/tmp/rbg/YOURPATH/' VOCyear '/'];
I tried looking at their Readme and documentation guides but they do not make any mention. Do correct me if I am wrong.
Let me know if I have not made my problem clear enough.
I tried looking at some files such as global.m but no go.
Your help is much appreciated and thanks in advance!
You can try to read pascal.m in the DPM package(voc-release5), there are similar code working on VOC2007/2010 dataset.
There are plenty of parts that need to be adapted to achieve this. For example the voc_config has to be adapted in order to read from your files.
The same with the pascal_train.m function. Depending on the images and the way you parse them, this may require quite some time to adapt this function.
Other functions to consider:
imreadx
pascal_test
pascaleval
I need to load experimental data into scicoslab, a (pretty badly designed) clone fork of scilab which happens to support graphical modeling. The documentation on the web is pretty poor, but it's reasonably similar to scilab and octave.
The data I need to process is contained into a certain number of text files: Data_005, Data_010, …, Data_100. Each of them can be loaded using the -ascii flag for the loadmatfile command.
The problem comes from the fact that loadmatfile("foo", "-ascii") loads the file foo.mat into a variable named foo. In order to to cycle on the data files, I would need to do something like:
for i = [5:5:100]
name = sprintf("Data_%02d", i);
loadmatfile(name, "-ascii");
x = read_var_from_name(name);
do_something(x);
end
where what I search for is a builtin read_var_from_name which would allow me to access the internal symbol table by string.
Do you know if there exist a similar function?
Notes:
There's no way of overriding this behavior if your file is in ascii format;
In this phase I could also use octave (no graphical modelling is involved), although it behaves in the same way.
>> foo = 3.14; name = 'foo'; eval(name)
foo =
3.1400
The above works in MATLAB, and Scilab's documentation says it also has an eval function. Not sure if I understood you correctly, though.
#arne.b has a good answer.
In your case you can also do that in matlab:
a=load('filename.mat')
x=a.('variable_name')
lets go through your points one by one:
"ScicosLab, a (pretty badly designed) clone of Scilab" This in my opinion is an inaccurate way of introducing the software. ScicosLab is not a clone of Scilab but a fork of it. The team behind ScicosLab (INRIA) are the ones who made scocos (now called xcos in Scilab development line). At some point (from Scilab v4) the Scilab team decided to move away from Tcl/tk towards Java, but the SciccosLab/scicos team departed, keep using the language (Tcl) and it's graphical user interface design package (tk). Giving the ScocosLab community the credit that the whole Scilab documentation and support is not very good in general. :) (more about Scilab and the forks here)
Regarding the technical question I'm not sure what you are trying to achieve here, Scilab/ScicosLab still have the eval function which basically does what you want. However this function is to be deprecated in favor of evstr. There is also the execstr function which worth studying.
The loadmatfile, as far as I have understood, "tries" to load the variables defined in a MATLAB .mat file (MATLAB's proprietary tabular format) into the Scilab workspace. For example if there is a variable foo it will "try" to create the variable foo and loads its value from the MATLAB script. Check this example. I would create a variable x(i) = foo in the for loop. again your question is not completely clear.
As a side note maybe you could consider exporting your data as CSV instead of .mat files.