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Change random values in the matrix of 234*10000

I have a matrix of 10*10 (in this example, actually the matrix is 234*10000) and I have to change the values at random locations...

12 days ago | 2 answers | 0

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Performing operations on non-uniform data

I want to perform subtraction operation on the second column of the below datapoints- I want this operation to be performed on ...

1 month ago | 1 answer | 0

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Grouping of data as per date and perform different operations

I have a set of data which needs to be grouped on the basis of the dates. Further calculations needs to be done like calculation...

2 months ago | 1 answer | 0

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Code run using Parfor function and error correction

I am using the below code. However, it takes a lot of time to run this especially when it has to search the data. I get the foll...

2 months ago | 1 answer | 0

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How can I speed up my for Loop in matlab?

I am running this code in which the code runs very slow. I have already run my code for more than 48 hours and still did not get...

2 months ago | 0 answers | 0

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How do quantitatively determine if the test statistics are significant or not?

How do quantitatively determine if the test statistics are significant or not? Basically, how to find out the critical values of...

2 months ago | 0 answers | 0

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MFE Financial toolbox related question

I am trying to use Realised variance from MFE Financial toolbox - Kevin Shephard. The function is - function [rv,rvSS]=realize...

2 months ago | 1 answer | 0

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Unix code check and REMOVE the datapoints ranging outside 9:00am and 4:15pm for a second by second dataset

I have a list of about 70 million rows. I want to delete the the following and clean the dataset- Any values which are 0 or in ...

6 months ago | 0 answers | 0

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find the element location

I have returns marked in a column of 1*20million column. It has a specific value as -10, but I am not able to find out where it ...

6 months ago | 2 answers | 0

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Cummulation in the rows

I have 234 rows and 10,000 columns. I want to find out the value of the integral as mentioned in the screenshot. For this, I am ...

6 months ago | 1 answer | 0

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Plot return HFD data

I want to plot the returns data in matlab, which is a matrix of about 18 million rows and three colums. I first calculate the re...

7 months ago | 0 answers | 0

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Data import from csv file

I want to import data from my csv file which has more than 2 million rows. I cant open the file in csv format. Thus, I want to o...

7 months ago | 1 answer | 0