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How to remove the footstalks (shown in fig.A) of the leaf?
I'm a beginner, so I'm sure there is a better way. However, I managed to remove those lines in two simple steps using thresholdi...

más de 7 años hace | 0

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How to remove duplicate rows from .mat file or text file with out sorting?
Seems you are really close to finding the solution. out=unique(A,'rows','stable') should give you the unsorted unique ro...

más de 7 años hace | 0

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How I can detect this ball in the image
For circles you can simply use the |imfindcircles| function. I=imread('crop.jpg'); imshow(I);hold on [centers rr] = i...

más de 7 años hace | 1

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Find number of circles that intersect certain boundary?
You can use the function |inpolygon| to find points inside of the larger circle. Try adding the following lines of code after _t...

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Title position below the x axis
Here are two options that may work for you: %alter vertical position of title figure;hold on subplot(2,1,1) ...

más de 7 años hace | 1

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Divide time array in day and night
There are many ways to do this. It is quite trivial in datetime format %This is your time vector time=datetime('2014-...

más de 7 años hace | 1

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how can I determine size of a text or csv file in matlab scripts?
props = dir(filename); props.bytes outputs the size of a file

más de 7 años hace | 1

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Inserting a linear fit equation and R sq value for a scatter plot
The R^2 goodness of fit is stored in gof.rsquare. This is one way to display it in the plot together with the equation: ...

más de 7 años hace | 0

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To Enter a Value in a Formulate
There are some different options. If you want to enter the value in the command window: T = input('Enter value of T') or...

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How can i use transparency parametr in plot3 or other method to make my plot semi transparency
You can play around with some hidden marker properties. %get marker handles markers=w.MarkerHandle; %change tran...

más de 7 años hace | 0

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Re-gridding global data matrices onto a common grid in Matlab
You can resample your data using |griddedinterpolant|. It seems to ignore NaNs, which is good in this case. An example: ...

más de 7 años hace | 1

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How to make bar graph come from the bottom for negative numbers
Modify the baseline ( <https://se.mathworks.com/help/matlab/creating_plots/modify-baseline-of-bar-graph.html link> )

más de 7 años hace | 4

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How to make an animated stairstep graph?
You can use the |comet()| function if you manipulate the data a bit. x=[0:1:10]; a=[0 1 0 1 0 1 0 0 1 1 0]; xq=0:0.0...

más de 7 años hace | 0

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detect increse/decreases in time series data
You can use the functions |findchangepts|, or |ischange| for time-series data, to detect abrupt changes in terms of slope or mea...

más de 7 años hace | 0

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How to make a code that loads specific images from multiple subfolders within a single folder?
The documentation is great ( <https://se.mathworks.com/help/matlab/ref/addpath.html#btpdojp-1 link> ) search for 'Add Folder ...

más de 7 años hace | 0

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How to store the column names for each numerical values for respective rows in an array
You can try something like this. data=readtable('Name.xlsx','sheet','test') Headers=data.Properties.VariableNames(2:end)...

más de 7 años hace | 1

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Plot air temperature data on pressure levels (Hovmöller diagram).
Here you go! Note that you specify the latitude and range of longitudes as the indices of their respective vectors, and not in u...

más de 7 años hace | 3

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Load data from a table from another file
Sure, just specify the location before the filename, e.g.: readtable('H:\folder\Table.xlsx') you can also add the folder...

más de 7 años hace | 1

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How to remove discontinuous edges of 3D surf plot?
Looks messy because log(0) is undefined. You can manipulate the data a bit and adjust the ZLim to make it look OK. Note that I a...

más de 7 años hace | 0

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I have equation having variable A(i) and B(j) where i and j where i varies from 1 to 5 and j varies from 1 to 3. How can I plot this equation by using one value of let say j against all values of i and same for other values of j ?
[A,B]=meshgrid(1:5,1:3) x=2.^A-2.^B plot either as a surface, surf(A,B,x) or in 2D, plot(x)

más de 7 años hace | 0

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How can I fill in cells of a table with cells of another table while the two tables do not share the same number of rows?
Let's give it a try. I have created a working example with two excel files. This code finds the 'event' in Table2 associated wit...

más de 7 años hace | 0

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How can I creat bar plots like the picture based on the existing data in attached Excel.
It's not the easiest figure to reproduce, as it involves double yaxis, errorbars and hatched fill. I have written a script for t...

más de 7 años hace | 0

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2D image surf to 3D-plot
Perhaps you are trying to pass a color image to surf, which does not work. Note that if you load a grayscale image, it will stil...

más de 7 años hace | 0

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Precision problem reading from excel?
You can actually reproduce this issue by typing: xlswrite('test15.xlsx',14.999999999999977) The cell in excel will say 1...

más de 7 años hace | 0

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datetime millisecond conversion puzzling
Problem: why does |milliseconds(X)| sometimes return doubles? Reason: Probably because the input value has decimals, in this...

más de 7 años hace | 0

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loop in a column to calculate max and min in a certain interval
Perhaps this will help... data=readtable('ROSETTE_S2_R5_GeometricData.csv'); [volumes]=unique(data{:,1}); out=nan(2,l...

más de 7 años hace | 0

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how to plot latitude and longitude data on map??
The question is too vague. However, assuming you have the mapping toolbox, you probably want to use geoshow and/or geoplot.

más de 7 años hace | 2

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How can I give color bar to my data in world map
I've never used |plotm|, but from the documentation it seems to be for 2D only, while what you want is 3D. You may wanna look in...

más de 7 años hace | 0

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Replace values in each column by 0 after a pre-specified search value was found in that column
Here is one solution, [row,col]=find(A==0.5) A(min(row(col==1))+1:end,1)=0 A(min(row(col==2))+1:end,2)=0 it may re...

casi 8 años hace | 0

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how to compare rows of a matrix
You can use |unique()| to find unique rows |C| and their index [C,IA,IC] = unique(A,'rows')

casi 8 años hace | 1