How to load very large trajectory file

I have a very large simulation trajectory file with 40000 frames and each frame has coordinates rx,ry,rz for almost 300 particles.I want to use only a frame at time and move to second frame in series of calculation like radial distirbution function.How should I load and read the trajectory file frame by frame? Can anyone suggest me the procedure or should i proceed with normal commands like dlmread and fscan?

Answer 1

[Pat Williamson]

I don't know if there is one good answer to this question given the information provided, but I have pulled together some related resources that can be helpful.

First, here is the documentation page meant to assist with dealing with large files and big data:

https://www.mathworks.com/help/matlab/large-files-and-big-data.html

There are also similar questions on MATLAB Answers with helpful information:

• https://www.mathworks.com/matlabcentral/answers/2009297-fastest-way-to-load-data
• https://www.mathworks.com/matlabcentral/answers/356897-how-do-i-speed-up-file-reading-for-large-files-with-floating-point-numbers-in-scientific-notation
• https://www.mathworks.com/matlabcentral/answers/2176908-matlab-transfer-speed-while-scripting
• https://www.mathworks.com/matlabcentral/answers/1640740-any-simple-ideas-to-improve-performance-of-reading-long-10-gb-scale-csv-file

If you have further questions about how to proceed with your data, I recommend contacting MathWorks Technical Support. More information for how to do so can be found in this MATLAB Answers post:

https://www.mathworks.com/matlabcentral/answers/383856-are-there-any-guidelines-tips-on-how-to-use-matlab-answers-and-the-mathworks-support