![]() But there's a funny thing going on with tsearch. I'm trying to write some code that includes re-meshing a domain divided into triangular elements, so there is a point at which I know my new grid points and my old grid points, and I have to find which of the old elements each of the new points corresponds to. I am trying to calculate the energy loss of the material at each cycleīy calculating the area under the curve in Matlab. We tested it at different frequencies and graphed I have a data file with x and y coordinates (strain versus stress forĪ material I was testing). Inability to deal with c-style pointers from m-files and the penaltyĪnyone have a better method (than the mathworks have ) for reading/ So all in all the typecasting slowness seems a result of matlab's The mex mxCreateNumericMatrix and then leaves the actual typecasting When I look at the c source file I see that the function itselfĭoesn't do any typecasting, it just creates a relevant datatype with In the same private directory: typecastc.c It seems to be aįunction which is compiled from an accompying c file that is located The function that serves the typecast.m function is a mex file called ![]() To my surprise the typecast method is actually a _lot_ slower thanĬonsecutively using fread, on inspection the profiler shows that the Since the function isn't too fast I thought I'd read the entire fileĪt once as uint8 and then typecast byte by byte to the relevant Numbers per time in a complicated loop using fread. I have a function that reads large binary files by reading a couple of PREFDIR failed to create directory '/.matlab/mcr_v78/MAIN_'. Warning: failed to create preference directory /.matlab/mcr_v78/MAIN_Ĭheck directory permissions.? Error using => prefdir What can I do to avoid this warning short of changing the way in which I compile my code? Is there a preference file I should link to? "Warning: failed to create preference directory" error. Whenever my code is executed by the crontab process it encounters a Problem with "setpref" command in compiled code I have some compiled matlab code that is being executed by a crontab process and am encountering a problem with using the setpref command. I believe there is a better way to do this, but I couldn?t find it.Ĭould anyone give me some reference about that? Nowadyas I copy and paste each value and put in the right place of the tex file. Table in Latex I?d like to know how to create a latex table based in a matrix output calculated in matlab. The function uses p_array=strsplit(path(),pathsep) to create the cell array, and then any(strcmp(p_array,folder_to_search_for)) to check if the folder you're looking for is in the cell array. Not sure if it's slower/faster than the regexp approach for a large number of folders, but I find it conceptually simpler.įirst, create a function for checking a single path. Old question, but here's another way using cell arrays by splitting the path() string. %%// strjoin is a recent MATLAB addition and is also available on file-exchange. Ind1 = ismember(basepath_list_cell,path_list_cell)Īddpath(strjoin(strcat(basepath_list_cell(~ind1),pathsep),'')) %%// basepath1 is the path to the main directory with sub-directories thatīasepath_to_be_searched = genpath(basepath1)īasepath_list_cell = regexp(basepath_to_be_searched,pathsep,'Split')īasepath_list_cell = regexp(path,pathsep,'Split') So even if you have selectively removed any sub-directory or even the basepath from the path, this code would take care of adding everything that's missing from the path. Main directory along with sub-directories search case with adding optionįor a basepath alongwith sub-directory search, the following code would try to find match for each sub-directory and also the basepath and add which ever is missing. If any(ismember(path_to_be_searched,path_list_cell))ĭisp('Yes, this directory is in MATLAB path') ĭisp('No, this directory is not in MATLAB path') ![]() Path_list_cell = regexp(path,pathsep,'Split') %%// For Windows and others, it needs to be investigated. %%// colon is the separator used for paths under Linux. ![]() Single directory search case %%// path_to_be_searched is the folder or directory to be detected ![]()
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