Professional Interests: ocean biogeochemistry, ecosystem modeling

Answered

Why am I getting the error "Array indices must be positive integers or logical values."?

My guess is you have a variable named eig sitting in your workspace. So when you try to call the eig function, the variable is ...

Why am I getting the error "Array indices must be positive integers or logical values."?

My guess is you have a variable named eig sitting in your workspace. So when you try to call the eig function, the variable is ...

2 months ago | 1

| accepted

Answered

Why does Matlab say my function is undefined?

If you strip out most of the commands, the main structure of your code looks like this: n=input('Enter an integer for two, th...

Why does Matlab say my function is undefined?

If you strip out most of the commands, the main structure of your code looks like this: n=input('Enter an integer for two, th...

2 months ago | 0

Answered

netcdf reading parameters "Error using double Out of memory. Type HELP MEMORY for your options"

What does the ncdisp command tell you about the variable sizes? Just paste the output of the following: ncdisp('dataset-oc-med...

netcdf reading parameters "Error using double Out of memory. Type HELP MEMORY for your options"

What does the ncdisp command tell you about the variable sizes? Just paste the output of the following: ncdisp('dataset-oc-med...

2 months ago | 2

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Answered

Why does this data file cause Matlab to lock-up?

This is just a guess, but... Did you have a script named TrajData.m open in the editor at the time you first made the typo? Mat...

Why does this data file cause Matlab to lock-up?

This is just a guess, but... Did you have a script named TrajData.m open in the editor at the time you first made the typo? Mat...

3 months ago | 1

Answered

attach a field to a shapefile and plot it

Do you need to actually add a new field to the shapefiles themselves? Or just add it to the read-in structure in Matlab? If ...

attach a field to a shapefile and plot it

Do you need to actually add a new field to the shapefiles themselves? Or just add it to the read-in structure in Matlab? If ...

4 months ago | 1

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Answered

How can I write an unformated string to file, i.e., without interpreting % and any other special characters

You can pass the string as a parameter to a simple '%s' formatter, rather than using the string itself as a format: >> fpri...

How can I write an unformated string to file, i.e., without interpreting % and any other special characters

You can pass the string as a parameter to a simple '%s' formatter, rather than using the string itself as a format: >> fpri...

4 months ago | 1

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Answered

How to use datenum with a date represented as a scaler?

Is your final goal to convert to a datenumber or an year-month-day array? As mentioned in the other answers, if you're using a ...

How to use datenum with a date represented as a scaler?

Is your final goal to convert to a datenumber or an year-month-day array? As mentioned in the other answers, if you're using a ...

4 months ago | 2

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Answered

Recreating a figure from its handle after it has been closed

No, the figure handle itself does not contain that information. The graphics objects handles loose their link to the relevant d...

Recreating a figure from its handle after it has been closed

No, the figure handle itself does not contain that information. The graphics objects handles loose their link to the relevant d...

5 months ago | 0

Answered

Graph Plotting! Which Function Shall I use?

A beeswarm plot might be an option... the <https://www.mathworks.com/matlabcentral/fileexchange/37105-plot-spread-points-beeswar...

Graph Plotting! Which Function Shall I use?

A beeswarm plot might be an option... the <https://www.mathworks.com/matlabcentral/fileexchange/37105-plot-spread-points-beeswar...

6 months ago | 1

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...

6 months ago | 2

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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; ...

6 months ago | 1

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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...

6 months 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]);

6 months ago | 0

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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...

6 months 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...

6 months ago | 1

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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.

7 months ago | 1

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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...

7 months ago | 1

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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' ...

7 months 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...

7 months 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: ...

8 months 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...

8 months ago | 0

| accepted

Submitted

Divided edge bundling in Matlab

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

8 months ago | 2 downloads |

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...

9 months 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 ...

9 months ago | 1

| accepted

Submitted

ecopath_matlab: A Matlab implementation of Ecopath

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

10 months ago | 1 download |

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...

10 months 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...

10 months 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...

10 months 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(....

11 months 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...

11 months ago | 2