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Question

Delete columns in a structure array

Hello. I have a structure array Data (1 x 500,000) with 10 fields f1, f2,.......f10. I want to delete all the columns i.e., Dat...

3 meses ago | 1 answer | 0

### 1

answerQuestion

Image pre-processing to remove noise

Hi. Is there any image pre-propcessing technique to remove noise from binary images? Please see attached image, I want to remove...

4 meses ago | 1 answer | 0

### 1

answerQuestion

Image pre-processing to make pixels in one straight line

Hi. Is there any image pre-propcessing technique to make the pixels align in a perferct staight line (please see the attached pi...

4 meses ago | 1 answer | 0

### 1

answerQuestion

Delete some columns from structure array

Hi. I am working with a structure array S (1 X 50,000) with 10 fields in which some columns are multiuple entries ands sub-set o...

4 meses ago | 1 answer | 0

### 1

answerQuestion

Maximum line length in houghlines

Hi. Is it possible to detect the lines using houghlines conditioned on maximum line length than the minimum line length. Meaning...

4 meses ago | 1 answer | 0

### 1

answerQuestion

Multiple and false lines using houghlines

Hi. I want to apply houghtransform on the attached image (see raw image) to detect the line elements. Unfortunately, there are m...

4 meses ago | 0 answers | 0

### 0

answersQuestion

How to save statistics in the function - image processing

Hi, I am running a code on a set of binary images to calculate the positions and angles of some line elements. I have some issue...

4 meses ago | 1 answer | 0

### 1

answerQuestion

Apply adaptive histogram equalization at the bottom part of the image

Hi. I have a set of 2000 tif images of size 1024 X 1024 pixels in a folder and I want to apply histogram equalization only at th...

5 meses ago | 1 answer | 0

### 1

answerQuestion

Problems with syntax and implementation of houghlines

Hello everyone. This question is to continue with one of my previous queries https://www.mathworks.com/matlabcentral/answers/71...

6 meses ago | 1 answer | 0

### 1

answerQuestion

Line length and orientation angle of two or more intersecting lines

I am using regionprops function to find the lengths and orientation angles of some lines in binary images. There is no issue wit...

8 meses ago | 1 answer | 0

### 1

answerQuestion

Length of the structure array

Hi. I am working with a structure array S (1 X 20,000) with 3 fields. I want to count the number of S(i) that meet a condition o...

más de 1 año ago | 1 answer | 0

### 1

answerQuestion

Mean command gives wrong answer

Hi. I want to calculate the mean of a data and the mean command gives wrong result. Below is the code. I should get 160 but, the...

más de 1 año ago | 3 answers | 0

### 3

answersQuestion

Sub-plots with multiple coordinate system (y-axes)

I have a question which is an extension of a previous question: https://www.mathworks.com/matlabcentral/answers/525423-combine-t...

más de 1 año ago | 1 answer | 0

### 1

answerQuestion

How do I calculate the area under a curve?

I have a reading curve from some experimental observations. I want to calculate the area under the curve - between customized X ...

más de 1 año ago | 1 answer | 0

### 1

answerQuestion

Combine two MATLAB figures with two y axes

Hi. I have two MATLAB figures and I want to combine them together, meaning to show them on one plot. These two figures have two ...

más de 1 año ago | 1 answer | 0

### 1

answerHow to delete the columns in a structure array

A similar question was asked by me in the past. https://www.mathworks.com/matlabcentral/answers/493440-delete-end-points-from-c...

más de 1 año ago | 0

| accepted

Question

Sub-plots properties

Hi. I have 4 MATLAB figures, using them as sub-plots I want to create a new figure. These 4 figures have a larger marker size an...

más de 1 año ago | 2 answers | 0

### 2

answersQuestion

Multiplication of two fields in a structure array

Hi. I want to perform element wise multiplication of two fields in a struture array. The size of the fields is same throughout f...

más de 1 año ago | 1 answer | 0

### 1

answerQuestion

Draw horizontal lines using for loop on set of images

Hi. I have around 5000 images in a folder, the names of the images are Combined_1, Combined_2, .... Combined_5000. I want to dra...

casi 2 años ago | 2 answers | 0

### 2

answersQuestion

Delete end points from columns in a structure array

Hello. I have a structure array S (1 x 50000) with 10 fields. The elements in the fields are column matrices (1 X M) with their...

casi 2 años ago | 2 answers | 0

### 2

answersQuestion

Contour plot using three vectors

Hi. I want to make a contour plot using three vectors. The vectors "x" and "y" has the X and Y coordinates/positions. The vector...

casi 2 años ago | 2 answers | 2

### 2

answersQuestion

Collapse contour plots on a single plot

Hi. I have two 10 contour plots with some colorbar to represent intensities. I want to combine them all together on to a single ...

casi 2 años ago | 1 answer | 0

### 1

answerQuestion

Contour plot of concentration of chemical species

Hi. I am releasing a chemical species CHX (N units) in a chamber. The size of the chamber is 100 X 100 X 100 cms^3. I want to pl...

casi 2 años ago | 1 answer | 0

### 1

answerQuestion

Iterations on field conditions of a structure array

Hi. I am working with a structure array S (1 X 50,000) with 10 fields. I want to find few paramters based on few conditions. Is ...

casi 2 años ago | 1 answer | 1

### 1

answerQuestion

No. of elements, mean and standard deviation of a field - conditions on other fields

Hi. I am working with a structure array S (1 X 50,000) with 10 fields. For example, Here is the input, S(1).f1=[10,70,30 40...

casi 2 años ago | 1 answer | 0

### 1

answerQuestion

Mean and standard deviation of a field - condition on another field

Hi. I am working with a structure array S (1 X 50,000) with 10 fields. I want to calculate the mean and standard deviation of fi...

alrededor de 2 años ago | 2 answers | 1

### 2

answersQuestion

Mean based on positive and negative values of a field

I have a structure S (10000 X 1) with 10 fields. I want to calculate (two) means and standard deviations of one particluar field...

alrededor de 2 años ago | 1 answer | 1

### 1

answerQuestion

Minimum and maximum values of a field in a structure array

Hi. I have a strcuture array with 10 fields. How can, I find the minumum and maximum values of a particular field f1? I tried ui...

alrededor de 2 años ago | 1 answer | 0

### 1

answerQuestion

How to combine two plots into one

I am using MATLAB R2018 b. I have two plots with same x but, the limits of y axes are different. Both plots has a line and some ...

alrededor de 2 años ago | 1 answer | 1

### 1

answerQuestion

How to combine two histograms

I have two different histogram plots with same axes limits. I want to combine them such that, I can make comparison between two ...

alrededor de 2 años ago | 1 answer | 0