Three column table into matrix
I think table2array is the function you're looking for.

7 months ago | 1

How to find data points within 2% tolerance of curve
Sounds like a nice homework problem. You'll probably want to use logical indexing to find the indices of the Y data that are w...

7 months ago | 0

| accepted

Plotting multiple graphs from multiple ranges in excel
The easiest way is probably to read the full range of data all at once, then loop through the different ranges you want to plot....

7 months ago | 0

Getting a filter error today when yesterday didn't?
I suspect that yesterday you weren't including x in the filter. Yesterday you were filtering the d signal, which is just [1 0 0 ...

7 months ago | 0

How do I fix my display of the x and y values? They should be x = 1.15 and y = 3.85.
The double equals is defining x and y as a boolean. It's saying x = 1 if minimum_voltage equals acosd(B/2*A)*5/180. Let's find o...

7 months ago | 0

How can i create these three images in one figure?
If you're question is about how to make subplots, here's how. figure subplot(3,1,1) plot(sind(1:1e4)) subplot(3,1,2) plot...

7 months ago | 0

How can I compute the mean value over a time interval?
Hi Anna, welcome to the forum. With these types of questions it always helps if you can provide a minimal working example. But...

8 months ago | 0

What MATLAB functions are underappreciated?
One of the most powerful functions I know of took me years from hearing about its existence to using it regularly, because it's ...

8 months ago | 3

What MATLAB functions are underappreciated?
I rarely see anyone use the lighting functions, but they're incredibly powerful and can make data come to life. They're provide ...

8 months ago | 1

Question

What MATLAB functions are underappreciated?
Open question: What MATLAB function(s) do you wish you had discovered sooner? Are there any functions that no one talks about, b...

8 months ago | 8 answers | 4

### 8

How to plot the point where two complicated graphs cross?
Does this do it for ya? https://www.mathworks.com/matlabcentral/fileexchange/11837-fast-and-robust-curve-intersections

8 months ago | 0

Array indices must be positive integers or logical values.
I think this is the error t(2*pi*j/(2*d)) The first time through the loop, j=3, which means 2*pi*j/(2*d) = 0.02 It's tryin...

8 months ago | 1

| accepted

How to create a bubble plot with Antarctic Mapping Tool
Hey @Raffaello Nardin, First off, excellent job on creating a minimal working example. That really helps me understand where y...

8 months ago | 4

| accepted

Multi Surface Plotting & Color Control of each surface
Try setting the facecolor option using the RGB values. Here are a red [1 0 0] and a blue [0 0 1] surface, using built-in example...

8 months ago | 0

How to make variable matrix?
In Matlab, the first index of any variable is 1, so T(0) will produce an error. Try T(1) to T(n+1).

8 months ago | 0

| accepted

Ackley Function 3D plot
It looks like the code stops at the line that says return. Try putting the function at the bottom of the script and ending it wi...

8 months ago | 0

| accepted

Uniformly distributed random variables
Ah, this is a fun question, because the concept it's getting at is quite common across science and engineering. The process of...

8 months ago | 1

| accepted

How to select the starting point of a curve and tare all x, y plot data to this point
Perhaps you could find the index of the location where the chage in Y exceeds some critical threshold. You'll have to manually t...

8 months ago | 0

| accepted

Contour plot of spatial distribution of temperature
The regular quarter-degree spacing of the data suggests that no interpolation is necessary for this dataset--it just needs to be...

8 months ago | 0

Calculate mean of gray Value
Try this. Below I'm creating an example matrix M, and calculate the mean of only the values that exceed zero: M = peaks(100); ...

8 months ago | 1

Interpolation or meshgrid...Error using matlab.internal.math.interp1
Ah, it looks like tt_sort and tt2_sort are in fact sorted, but they contain some duplicate values. The easiest way to work aroun...

8 months ago | 0

Median filter for an imported Excel file (removing spikes from a signal)
For a 3-point moving median, you can medfilt1 as you suggest, like this: weg_f = medfilt1(weg,3); Or similarly, you could us...

8 months ago | 0

| accepted

How to extract specific parts of a matrix
Let's see if I understand what you're trying to do. As I understand it, you have a 512x512 matrix with lots of values of 98 on t...

9 months ago | 1

| accepted

Plotting the trend line without plotting the data
Or more simply, polyplot(wspd_3yr,msid_3yr) using the polyplot function found here.

9 months ago | 0

trend line plotting question
I've written a simple function called polyplot to add a linear trend line to plots. Get it on the File Exchange here.

9 months ago | 0

How to Plot Time Series Data of a Temperature Map
Hi John, A couple of things: Location number 7 is in Antarctica! The sea surface temperature data is all NaN on land, so ave...

9 months ago | 1

| accepted

Climate Data Toolbox: how can i calculate correctly a trend with trend function?
Hi Alessandro, I think you've mostly got it. One key point to note is your sampling frequency is monthly, so 12 times per year...

9 months ago | 0

| accepted

Making a Map Image from a Matrix
With the Climate Data Toolbox you could do it like this: T = flipud(reshape(load('TS20040101.txt'),[72 144])); % loads, reshape...

9 months ago | 2

| accepted

Control Text Label on plot with categorical axis
Have you tried using the 'vertical' and 'horizontal' alignment options? plot(5,6,'o') text(5,6,'default text') text(5,6,'ab...

9 months ago | 1

| accepted