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Azura Hashim


Last seen: 4 Monate ago Active since 2016

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Cointegration function for many variables
Is there a function or script similar to corrcoef that can return cointegration results in a matrix form, without the need for a...

8 Monate ago | 0 answers | 0

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answers

Question


How to replace ismissing values in tables
I'm reading a text file into a table and Matlab is returning some values in the table as [1×1 missing]. I would like to replace...

mehr als ein Jahr ago | 0 answers | 0

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answers

Question


Exponential moving average doesn't seem to work properly
Hi, I have a question about the moving average function: ma = movavg(Data,type,windowSize) In the following example: movavg(...

mehr als ein Jahr ago | 2 answers | 0

2

answers

Question


Interactive broker timeseries vs history?
What is the difference between Interactive Broker timeseries and history functions? They seem to be returning the same data. Di...

mehr als ein Jahr ago | 1 answer | 0

1

answer

Question


Data access performance tips
Hi, Need some tips please. I need fast performance when: 1) Reading datafiles saved to disk 2) Accessing and modifying data w...

fast 2 Jahre ago | 0 answers | 0

0

answers

Question


Java heap space error
Hi, Got the error below: Exception in thread "Thread-35": java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.co...

etwa 2 Jahre ago | 1 answer | 0

1

answer

Question


IQFeed market depth and time series not working
Hi, The following didn't work for me. Help please. Retrieving market depth data - Got the error "The variable IQFeedLevelTwoDa...

etwa 2 Jahre ago | 1 answer | 0

1

answer

Question


timeout on input prompt
Hi, I need to implement a timeout on an input prompt. I have found similar questions but all the answers implement a dialog b...

etwa 3 Jahre ago | 1 answer | 0

1

answer

Question


Feature selection with NaN
Hi, I have a high dimensional data where I've managed to build a classification model using fitctree that is returning satisf...

mehr als 3 Jahre ago | 1 answer | 0

1

answer

Question


How to optimise classification learner for a specific class
Hi, Is it possible in the classification learner app to prioritise the accuracy for a specific class? For example, if I have ...

mehr als 3 Jahre ago | 1 answer | 0

1

answer

Question


Vectorizing a loop calculation
Hi, Is it possible to convert the loop below into a vector calculation? Thank you. dataset=table(); dataset.value=rand(...

mehr als 3 Jahre ago | 0 answers | 0

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answers

Question


Visualising matlab results in PowerBI
Is there a way of using PowerBI to visualise variables in the Matlab workspace, without having to write the data to a file or da...

fast 4 Jahre ago | 3 answers | 0

3

answers

Question


Fast and simple trend
Hi, I need a fast and simple way to calculate the trend of a variable at each point in time for data over the preceding 1 hou...

fast 4 Jahre ago | 2 answers | 0

2

answers

Question


database returns null as -2147483648
When I executed a query using MySQL console null values returned correctly. But when I queried the same data using database func...

etwa 4 Jahre ago | 0 answers | 0

0

answers

Question


Converting loop to vector operation
Hi, I have a large dataset where I calculate the value of some result in each row based on data in preceding rows. Currently ...

mehr als 4 Jahre ago | 1 answer | 0

1

answer

Question


Asynchronous parallel processing when a worker is available
Hello, I need to write a script that: # Builds an input array for a function. # When there is an available worker, assig...

mehr als 4 Jahre ago | 1 answer | 0

1

answer

Question


Array function for ranges
Hi, I have a binary image in a matrix, call it binarymage. I then want to determine whether various areas in the image are wh...

mehr als 4 Jahre ago | 2 answers | 0

2

answers

Question


High speed OCR and parallel processing
Hello, I've written a number of programs to read tabular data in images using Matlab's ocr function. I have cleaned up the im...

mehr als 4 Jahre ago | 1 answer | 0

1

answer

Question


Reading table from screen
Hi, I need to continuously read tabular data from a browser into Matlab arrays. Scraping is not an option. I came across an O...

fast 5 Jahre ago | 0 answers | 0

0

answers

Question


Recommendation for Matlab consultant
Hi I'm looking for a Matlab consultant to write some programs. I know of Yair Altman but also looking for other consultants out ...

fast 5 Jahre ago | 0 answers | 0

0

answers

Question


Fast data access (database or store in array)?
Hi, I have data stored in a local mysql database but it takes a few seconds for Matlab to do the query and read it into a mat...

fast 5 Jahre ago | 0 answers | 0

0

answers

Question


table variable name based on array
Hi, is it possible to assign table variable name based on strings in an array. For example: colnames={'a' 'b'}; a=[1;2];...

etwa 5 Jahre ago | 2 answers | 0

2

answers

Answered
Database toolbox downloading individual data as cell arrays
Excellent, this works. Thanks for your help.

mehr als 5 Jahre ago | 0

Question


Database toolbox downloading individual data as cell arrays
Hi, I am using database toolbox to fetch data using MySql. However the fetched data matrix consists of individual values as cell...

mehr als 5 Jahre ago | 2 answers | 0

2

answers