# Teshan Rezel

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**Content Feed**

Question

problem with videoWriter not closing (2)

Hi folks, This is a followup to my original question, found here! I am creating a video and having trouble with the videoWrit...

2 months ago | 1 answer | 0

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answerQuestion

problem with videoWriter not closing

Hi folks, I am creating a video and having trouble with the videoWriter not closing, or taking a very long time to close. May...

2 months ago | 1 answer | 0

### 1

answerQuestion

How to make one video out of 3 images?

Hi folks, I'm trying to create a single image out of 3 different images, then collate the subsequent images into a video. I'm a...

2 months ago | 1 answer | 0

### 1

answerQuestion

problem with creating video from black and white images

Hi folks, I am trying to create a video using Black and White images using the following code: writerObj = VideoWriter(threshV...

2 months ago | 3 answers | 0

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answersQuestion

Is it possible to train a model to recognise the object in this video?

Link to video Hi folks, I've tried using various image processing techniques on the images used to make this video, to try and...

3 months ago | 1 answer | 0

### 1

answerQuestion

help with deleting zeros from an array

Hi folks, I am trying to use polyfit and polyval to get the line of best fit across two sets of data, but am getting a very wie...

3 months ago | 1 answer | 0

### 1

answerQuestion

Help with linear regression

Hi folks, I have 2 tables. A is 256x54 and B is 1x54. I want to correlate each of the 256 values in each column of table A to...

3 months ago | 0 answers | 0

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answersQuestion

finding the start and end points of a unimodal peak

Hi folks, I am trying to automate the finding of the start and end of a peak. Many of the peaks I am looking at are gaussian. H...

4 months ago | 2 answers | 0

### 2

answersQuestion

Is there a way to extract the numeric data from these chars?

Hi folks, I have a cell of times (attached), which I need to read as numbers. Is there any way to do this? Using num2str() doe...

4 months ago | 2 answers | 0

### 2

answersQuestion

Help with linear optimisation problem

Hi folks, I'm looking to conduct a linear optimisation and was hoping for some help on the matter. I have 56 columns of data...

4 months ago | 1 answer | 0

### 1

answerQuestion

Is there a way to convert times in this format to double, so I can perform mathematical operations on them?

Hi folks, I have an array of times that looks like this: [1059, 1100, 1101...] where 1059 = 59 minutes past 10am. I need to w...

4 months ago | 2 answers | 0

### 2

answersQuestion

Is it possible to rectify the figure such that the zig-zag effect doesn't occur?

Hi folks, I have a series of graphs as per below. With all of them, they appear to have this "wonky" tail and I'm not sure wha...

4 months ago | 1 answer | 0

### 1

answerQuestion

Is there a way to segment this image into 3 parts, even though the colours are so similar?

Hi folks, I am trying to segment the following image of a seed. The points of interest look very similar in RGB, HSV, LAB and YC...

6 months ago | 1 answer | 0

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answerQuestion

Deleting certain elements from an array without looping

Hi folks, I have a cell array containing all the file names in a subfolder. I want to remove the filenames that are not 21 char...

6 months ago | 2 answers | 0

### 2

answersQuestion

renaming a variable, or creating a dynamic variable name

Hi folks, I read on here that creating dynamic variable names is bad programming practice, so was hoping to get some help with...

7 months ago | 2 answers | 0

### 2

answersQuestion

Is there a way to overlay a graph onto a video, plotting each successive point with each frame?

Reposted since the previous post didn't get resolved! Hi folks, I have a script that creates a video from image files, as be...

7 months ago | 2 answers | 0

### 2

answersQuestion

Is there a way to overlay a graph onto a video, plotting each successive point with each frame?

Hi folks, I have a script that creates a video from image files, as below: for i = 1 : numFolders RawImages = [vidFolders...

8 months ago | 2 answers | 0

### 2

answersQuestion

help with reading txt file into matlab

hi folks, I have a very large txt file that I want to read into Matlab. When I use the "import data" option it reads the file j...

9 months ago | 1 answer | 0

### 1

answerQuestion

Help with extracting data from excel

Hi folks, I'm trying to extract data from excel files in a specific way. Essentially, I want to loop through each file, get t...

9 months ago | 1 answer | 0

### 1

answerQuestion

Help with syntax for a self-made function

Hi folks, I have the following function defined in Matlab but am getting an error when running. The error and the code are belo...

9 months ago | 1 answer | 0

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answerQuestion

Is there a way to overlay one mask onto another?

I have two masks, as below. I want to make sure that the white area of the second mask is not more than the white in the first. ...

10 months ago | 1 answer | 0

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answerQuestion

Is there a way to threshold the background out of the image, to leave only the object?

Hi folks, I have images that look like the following, and I'm trying to threshold out the background. For some images, this is ...

10 months ago | 1 answer | 0

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answerQuestion

App designer - Automatically scale app to the size of the screen it is used on

Hi folks, I have an app where the components are scaled appropriately for my screen, but not for others of a different (smalle...

10 months ago | 1 answer | 0

### 1

answerQuestion

problem with polyval plotting

Hi folks, I am trying to plot a trendline on a scattergraph but I'm not sure why the following is happening! Any help will be a...

10 months ago | 1 answer | 0

### 1

answerQuestion

Plotting data with 5 dimensions

Hi folks, I have a dataset that has data points each with a name and 4 elements. However, of these elements are percentages t...

11 months ago | 1 answer | 0

### 1

answerQuestion

VERTCAT error when trying to populate array

Hi folks, I am trying to write some fata into an array, which I will then write to excel. I get the VERTCAT error when trying t...

11 months ago | 1 answer | 0

### 1

answerQuestion

Problem writing histogram data to excel - non-English characters and mismatched columns

Hi folks, I am trying to write image histogram data to excel, for various images. However, I am running into a problem where t...

11 months ago | 1 answer | 0

### 1

answerQuestion

Is there a way to write data to excel, on different sheets, with each sheet named?

Hi folks, I am trying to write data from matlab into excel, onto multiple sheets within the same excel file. However, I would l...

11 months ago | 1 answer | 0

### 1

answerQuestion

Is there a way to shift the data upwards automatically?

Hi folks, I have a graph as follows. I am looking to shift the valley (red) upwards to be in keeping with the preceeding data. ...

11 months ago | 1 answer | 0

### 1

answerQuestion

Error: Expected input to be a vector

Hi folks, I am calling a self-made function as follows: ir = rotateAround(ig, Cy, Cx, Angle_DEG); But the last variable, Ang...

11 months ago | 1 answer | 0