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Michel Nieuwoudt


Last seen: 2 months ago |  Active since 2016

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Research scientist in Raman and IR spectroscopy, very much a beginner in the use of Matlab

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Subdividing a matrix and pairing specific columns in the subdivisions
Hi experts, I have a matrix of 1001 columns and 6000 rows. The first column is frequency, and the rest are signal intensities o...

3 years ago | 2 answers | 0

2

answers

Question


Label each data point and color code the data points
Hello, I have an XY scatter plot of 49 points, and I want to label each point according to a text. There are three classes of...

4 years ago | 1 answer | 0

1

answer

Question


Help with file format conversion please!
I have a set of numbers of XY data (.csv format), with each XY value in the format: 2.024890e 002,2.069117e 003. How do I conver...

5 years ago | 1 answer | 0

1

answer

Question


combining different csv files from a folder into one matrix
Hello, I have 800 files with 1554rows and 2columns so (1554x2) , that I'd like to read from a folder and then combine them into...

5 years ago | 2 answers | 0

2

answers

Answered
Combining y columns of several x,y matrices into one matrix
Thank you! have done :)

6 years ago | 0

Question


Combining y columns of several x,y matrices into one matrix
OK, I've edited my request with more detail: I have ten (1554x2) .csv files of x,y data (I've attached eight here, for some rea...

6 years ago | 2 answers | 0

2

answers

Question


How do I save a matrix in ascii format so that the variable names are included as the first row header?
Hi, I have assigned variable names to each column (14 columns) of my matrix. But when I save the matrix in ascii format, the ...

7 years ago | 1 answer | 0

1

answer

Question


I would like to import a matrix that has filenames in the first row with numbers and a letter. How can I do this wihout it importing as NaN? It's not a date format.
Hello, I am trying to import a data matrix that has the first row as the Sample ID, which has numbers and a letter: e.g., 20W...

8 years ago | 1 answer | 0

1

answer

Answered
How do I add NaNs to each of a set of vectors of different lengths to make them all the same length please?
Thank you for your answer, however, I'm not sure I understand the last line. (I am still learning!)

8 years ago | 0

Question


How do I add NaNs to each of a set of vectors of different lengths to make them all the same length please?
I have 13 columns that I'd like to put into a matrix, but they are different lengths. I can add NaN to them to make them the sam...

8 years ago | 3 answers | 0

3

answers

Question


I would like to convert a date in the format of, for e.g., 02 September 2004, to a datenumber. But this format is not a standard Matlab format. Does anyone know how I could do this please?
I would like to convert a date in the format of, for e.g., 02 September 2004, to a datenumber. But this format is not a standard...

8 years ago | 1 answer | 0

1

answer