Answered

How do I read, change and write data back into the same txt file, at the same place?

To replace a specific bit of text in a text file, you're going to have to rewrite the entire file. Assuming the files above are...

How do I read, change and write data back into the same txt file, at the same place?

To replace a specific bit of text in a text file, you're going to have to rewrite the entire file. Assuming the files above are...

1 year ago | 2

| accepted

Answered

Plotting hitmap with different box size

You can create this pretty easily using patches: The test data: c = rand(20,9)*2 - 1; % Color value s = c; ...

Plotting hitmap with different box size

You can create this pretty easily using patches: The test data: c = rand(20,9)*2 - 1; % Color value s = c; ...

1 year ago | 1

| accepted

Answered

How can i crop a figure

Just to clarify, when you say "like a map", you don't mean it's a map axis (Mapping Toolbox), do you? Cropping a map axis is mu...

How can i crop a figure

Just to clarify, when you say "like a map", you don't mean it's a map axis (Mapping Toolbox), do you? Cropping a map axis is mu...

1 year ago | 0

Answered

How can I display elements of a 2D matrix as blue, green and red squares?

You just need to set the color limits: set(gca, 'clim', [0 10]);

How can I display elements of a 2D matrix as blue, green and red squares?

You just need to set the color limits: set(gca, 'clim', [0 10]);

1 year ago | 0

| accepted

Answered

How to Draw a Line Between Two Points on Different Axes

I suggest using annotations paired with the very handy <https://www.mathworks.com/matlabcentral/fileexchange/13634-axescoord2fig...

How to Draw a Line Between Two Points on Different Axes

I suggest using annotations paired with the very handy <https://www.mathworks.com/matlabcentral/fileexchange/13634-axescoord2fig...

1 year ago | 1

Answered

Calculate number of hours below a threshold temperature

I think you should be able to accomplish this by retiming twice; once to fill in any gaps with whatever method you prefer, and t...

Calculate number of hours below a threshold temperature

I think you should be able to accomplish this by retiming twice; once to fill in any gaps with whatever method you prefer, and t...

1 year ago | 2

| accepted

Answered

My circular_prime function only works well for two_digit input

I'd suggest looking at the |circshift| function.

My circular_prime function only works well for two_digit input

I'd suggest looking at the |circshift| function.

1 year ago | 1

| accepted

Answered

How can I polar plot in decibels?

If you have a recent version of Matlab (R2016a or later), you can use polaraxes/polarplot to get much more flexibility in settin...

How can I polar plot in decibels?

If you have a recent version of Matlab (R2016a or later), you can use polaraxes/polarplot to get much more flexibility in settin...

1 year ago | 1

| accepted

Answered

How to get the order indices in a character array?

c = {... 'x_air' 'v_air' 'p_headspace' 'p_environment' ...

How to get the order indices in a character array?

c = {... 'x_air' 'v_air' 'p_headspace' 'p_environment' ...

1 year ago | 4

| accepted

Answered

What is this stack trace and what can I do to avoid it?

This isn't really an answer to the why of the question, but I can agree that this is a common problem (in my experience, at leas...

What is this stack trace and what can I do to avoid it?

This isn't really an answer to the why of the question, but I can agree that this is a common problem (in my experience, at leas...

1 year ago | 0

Answered

How to plot temporal changes in batches of data?

Assuming your file is read into a table array, I think the quickest way to do this is to unstack the SSID data and then plot: ...

How to plot temporal changes in batches of data?

Assuming your file is read into a table array, I think the quickest way to do this is to unstack the SSID data and then plot: ...

1 year ago | 1

Answered

Is the upper limit of a color bar the true maximum value of the data in the color map, or is it larger ?

The color limits are usually set to match the plotted data for most standard functions (pcolor, surf, imagesc, etc), although th...

Is the upper limit of a color bar the true maximum value of the data in the color map, or is it larger ?

The color limits are usually set to match the plotted data for most standard functions (pcolor, surf, imagesc, etc), although th...

1 year ago | 0

| accepted

Submitted

Divided edge bundling in Matlab

Calculate and plot graph divided edge bundle pathways for directional network graphs

1 year ago | 1 download |

Answered

Is there a function to identify whether polylines are located inside a polygonal region?

You can try out my <https://github.com/kakearney/lineinpolygon-pkg lineinpolygon.m> function. (Sorry, the GitHub repo doesn't h...

Is there a function to identify whether polylines are located inside a polygonal region?

You can try out my <https://github.com/kakearney/lineinpolygon-pkg lineinpolygon.m> function. (Sorry, the GitHub repo doesn't h...

2 years ago | 1

| accepted

Answered

seimlogx not working in an iteration

The |hold on| command is the culprit... you're issuing it before you plot, so the linear axis is being held throughout. If you ...

seimlogx not working in an iteration

The |hold on| command is the culprit... you're issuing it before you plot, so the linear axis is being held throughout. If you ...

2 years ago | 1

| accepted

Submitted

ecopath_matlab: A Matlab implementation of Ecopath

Reproduces the main mass-balance algorithm from the popular ecosystem modeling tool, Ecopath

2 years ago | 3 downloads |

Answered

How to avoid white patch in contourf ?

Matlab's |contourf| function doesn't actually plot contour faces for lower-than-lowest-clevel regions when are unenclosed. (And...

How to avoid white patch in contourf ?

Matlab's |contourf| function doesn't actually plot contour faces for lower-than-lowest-clevel regions when are unenclosed. (And...

2 years ago | 2

Answered

How can I quickly find the intersections between many individual line segments and a polygon?

Is your polygon always convex? If so, you can do the ray extension from each polygon vertex in all directions at once, and assu...

How can I quickly find the intersections between many individual line segments and a polygon?

Is your polygon always convex? If so, you can do the ray extension from each polygon vertex in all directions at once, and assu...

2 years ago | 1

| accepted

Answered

Insert specific number of rows of zeroes(5) after every 56 rows in my n*m matrix. I am able to create matrices but can I do the insertion without loop given I know the size of matrix? Thanks for help

Another approach, which works even if your data doesn't divide evenly: x = rand(21,6); nrow = 5; % number of ro...

Insert specific number of rows of zeroes(5) after every 56 rows in my n*m matrix. I am able to create matrices but can I do the insertion without loop given I know the size of matrix? Thanks for help

Another approach, which works even if your data doesn't divide evenly: x = rand(21,6); nrow = 5; % number of ro...

2 years ago | 0

| accepted

Answered

gscatter: connecting groups by lines through this function

The |gscatter| function already plots the data as line objects... you just need to add a visible line style: h = gscatter(....

gscatter: connecting groups by lines through this function

The |gscatter| function already plots the data as line objects... you just need to add a visible line style: h = gscatter(....

2 years ago | 1

Answered

Legend not showing markers

I've found that legends can sometimes benefit from taking a deep breath. Not sure exactly why, but it seems that since the intr...

Legend not showing markers

I've found that legends can sometimes benefit from taking a deep breath. Not sure exactly why, but it seems that since the intr...

2 years ago | 2

Answered

Why is an empty string not empty? isempty('') returns true, but isempty("") returns false

I think string arrays function more like cell arrays in this context... the first element of the string itself isn't empty, but ...

Why is an empty string not empty? isempty('') returns true, but isempty("") returns false

I think string arrays function more like cell arrays in this context... the first element of the string itself isn't empty, but ...

2 years ago | 3

Answered

Given the location (coordinates) of a point in a gridmesh, how can I extract the number of the grid that the point is located in?

You can use the |discretize| function to bin points: nx = 2; ny = 2; xedge = linspace(0,1,nx+1); yedge = lin...

Given the location (coordinates) of a point in a gridmesh, how can I extract the number of the grid that the point is located in?

You can use the |discretize| function to bin points: nx = 2; ny = 2; xedge = linspace(0,1,nx+1); yedge = lin...

2 years ago | 3

| accepted

Answered

Stretch parts of axis (non uniform axis)

You could scale the data appropriately and then overwrite the tick labels, but assuming you only have a few scaling blocks, I of...

Stretch parts of axis (non uniform axis)

You could scale the data appropriately and then overwrite the tick labels, but assuming you only have a few scaling blocks, I of...

2 years ago | 1

Answered

How to index a matrix using the ITERATION values of a valArray with non-consecutive numbers?

There are two ways you could do this. One is to use an index value corresponding to the length of your |s| values: s = [12...

How to index a matrix using the ITERATION values of a valArray with non-consecutive numbers?

There are two ways you could do this. One is to use an index value corresponding to the length of your |s| values: s = [12...

2 years ago | 0

| accepted

Answered

Finding corresponding x value for second graph

Best guess, seeing that I can't see what your myode45function returns... It looks like your |y| matrix has at least 2 columns. ...

Finding corresponding x value for second graph

Best guess, seeing that I can't see what your myode45function returns... It looks like your |y| matrix has at least 2 columns. ...

2 years ago | 0

Answered

Find unique in matrix of x,y coordinates

To find unique rows, you can use |unique| with the |'rows'| option. (The |'stable'| option preserves the input order, if that's...

Find unique in matrix of x,y coordinates

To find unique rows, you can use |unique| with the |'rows'| option. (The |'stable'| option preserves the input order, if that's...

2 years ago | 1

| accepted

Answered

I'm trying to sort one vector based on another vector of seemingly the same size, but i keep getting the index exceeds matrix dimensions error. What's the issue?

I'm pretty sure there a couple things in here that aren't working like you'd like them to. First, in you capital function, t...

I'm trying to sort one vector based on another vector of seemingly the same size, but i keep getting the index exceeds matrix dimensions error. What's the issue?

I'm pretty sure there a couple things in here that aren't working like you'd like them to. First, in you capital function, t...

2 years ago | 0

Answered

Lines of longitude. How to merge points?

Assuming this is a first step in mapping something a bit more complicated, I'd suggest using an existing mapping toolbox rather ...

Lines of longitude. How to merge points?

Assuming this is a first step in mapping something a bit more complicated, I'd suggest using an existing mapping toolbox rather ...

2 years ago | 1

| accepted

Answered

search through an array for patterns and put into cell arrays.

This sort of problem can usually be solved by using a various combinations of |diff|: A = [ 1 2 3 78 28 92 1 76 89 90 23 87...

search through an array for patterns and put into cell arrays.

This sort of problem can usually be solved by using a various combinations of |diff|: A = [ 1 2 3 78 28 92 1 76 89 90 23 87...

2 years ago | 1

| accepted