MATLAB Answers

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Feedback re: Using Tall Arrays with Big Data Demo Video

Gabriel Ha さんによって質問されました 2016 年 9 月 29 日
最新アクティビティ Hector Tejeda さんによって 回答されました 2018 年 4 月 20 日
If you have questions, comments, and/or feedback regarding the Tall Arrays in Action video, or using MATLAB with big data in general, please post them here, and I will respond to you (or find someone to respond =P) as soon as I can!
Best regards, Gabriel
P.S. Heather Gorr has a very similar video located here. This Answers entry is intended for the first video, but feel free to ask away about tall arrays in general =)

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Rick Amos
2016 年 10 月 11 日
Hi Michel, at this time the only way to add new data to a tall array is to recreate the tall array from a datastore containing both the existing data and new data. You could use the tall array write method to achieve this:
% Suppose at the start you have initial data, write it out as so:
write('MyFolder01', tX1);
% Suppose you have some new data at a later time, write it out like so:
write('MyFolder02', tX2);
% Then to analyse all the data thus far, specify both folders as
% the input to datastore:
tX = tall(datastore({'/my/folder/01', '/my/folder/02'}));
Kind Regards, Rick
mohaideen
2016 年 12 月 1 日
Is there any test sensor data set is available for big data analytics?.
Gabriel Ha 2017 年 1 月 17 日
We may have some coming out with our next release. Be sure to check back when 17a goes out!

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回答者: Hector Tejeda 2018 年 4 月 20 日

At the time of performing the calculations I get an error saying that indexing using tall arrays as subscripts for non-tall arrays is not supported.

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