Professional Interests: ocean biogeochemistry, ecosystem modeling

Answered

Colour range in a surfplot

By default, a surf plot uses faceted shading, which means that each face is a solid color, determined by a single vertex in that...

Colour range in a surfplot

By default, a surf plot uses faceted shading, which means that each face is a solid color, determined by a single vertex in that...

1 month ago | 4

| accepted

Answered

How to change the origin from (0,0) to different coordinates in a plot

You don't need to move the axis; you need to provide x-values for your data. Right now, you're using the ydata-only option for ...

How to change the origin from (0,0) to different coordinates in a plot

You don't need to move the axis; you need to provide x-values for your data. Right now, you're using the ydata-only option for ...

1 month ago | 0

Answered

I got "The expression to the left of the equals sign is not a valid target for an assignment."

As others have pointed out, i is already assigned the value you want by default. But assuming it weren't, the proper way to ass...

I got "The expression to the left of the equals sign is not a valid target for an assignment."

As others have pointed out, i is already assigned the value you want by default. But assuming it weren't, the proper way to ass...

1 month ago | 0

Answered

Create a Matrix with Specific Pattern for Changing Values

Create a grid of values, then unwrap: xval = [-3*pi/4 -3*pi/8 0]; [a,b,c] = ndgrid(x,x,x); x = [c(:) b(:) a(:)]

Create a Matrix with Specific Pattern for Changing Values

Create a grid of values, then unwrap: xval = [-3*pi/4 -3*pi/8 0]; [a,b,c] = ndgrid(x,x,x); x = [c(:) b(:) a(:)]

1 month ago | 0

Answered

How do I insert multiple vectors as diagonals in the same matrix?

You're close... you just need to add the matrices together: A = diag(v,1) + diag(v,-1) + diag(v1,0)

How do I insert multiple vectors as diagonals in the same matrix?

You're close... you just need to add the matrices together: A = diag(v,1) + diag(v,-1) + diag(v1,0)

1 month ago | 0

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Answered

How to concentrate matrices of different row length (same column length) into one matrix by unfolding each of the matrices to the smallest row length conatining numbers not nan

Do any of your matrices have non-trailing blank/all-NaN lines that you want to preserve? Or are you just trying to strip out th...

How to concentrate matrices of different row length (same column length) into one matrix by unfolding each of the matrices to the smallest row length conatining numbers not nan

Do any of your matrices have non-trailing blank/all-NaN lines that you want to preserve? Or are you just trying to strip out th...

1 month ago | 2

Answered

find the shortest path

Take a look at graph and digraph objects; the shortestpath function provides several different algorithms to calculate this for ...

find the shortest path

Take a look at graph and digraph objects; the shortestpath function provides several different algorithms to calculate this for ...

1 month ago | 2

Answered

how to use color sets in maps by defining intervals in matlab (for example: lower than 10 , between 10 and 50 , between 50 and 200, between 200 and 1000, greater than 1000). thanks

What are you trying to do with those color intervals? Create a colorbar? Or perhaps a contour plot? If the latter, you can tr...

how to use color sets in maps by defining intervals in matlab (for example: lower than 10 , between 10 and 50 , between 50 and 200, between 200 and 1000, greater than 1000). thanks

What are you trying to do with those color intervals? Create a colorbar? Or perhaps a contour plot? If the latter, you can tr...

1 month ago | 1

Answered

Remove data elements of the legend from figure

Technically, you can delete parts of a legend, but I only know how to do it via code, not via to UI. I should mention that us...

Remove data elements of the legend from figure

Technically, you can delete parts of a legend, but I only know how to do it via code, not via to UI. I should mention that us...

1 month ago | 1

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Answered

How to plot four subfigures in one figure? Rather than subplot

I think the only slightly difficult part of this would be the modified x-ticks. When I create adjacent axes like this, I prefer...

How to plot four subfigures in one figure? Rather than subplot

I think the only slightly difficult part of this would be the modified x-ticks. When I create adjacent axes like this, I prefer...

2 months ago | 1

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Answered

Matrix dimension does not agree when using .*

When you calculate Y = diff(X,n) where X is a vector, Y will have length length(X)-n. So you need to adjust X accordingly wh...

Matrix dimension does not agree when using .*

When you calculate Y = diff(X,n) where X is a vector, Y will have length length(X)-n. So you need to adjust X accordingly wh...

2 months ago | 0

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Answered

How to display the data points on my graph?

Add a hold after your scatter plot: scatter(rand(10,1), rand(10,1)); hold on fplot(@(x) x, [0 1])

How to display the data points on my graph?

Add a hold after your scatter plot: scatter(rand(10,1), rand(10,1)); hold on fplot(@(x) x, [0 1])

2 months ago | 0

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Answered

Plot a drawn, filled shape at each data point

A single multi-faceted patch will render more quickly than lots of individual rectangles. And this option allows your marker to...

Plot a drawn, filled shape at each data point

A single multi-faceted patch will render more quickly than lots of individual rectangles. And this option allows your marker to...

2 months ago | 0

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 ...

6 months ago | 2

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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...

6 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...

6 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...

7 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 ...

8 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...

8 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 ...

8 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...

9 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...

10 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...

10 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; ...

10 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...

10 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]);

10 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...

10 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...

10 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.

11 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...

11 months ago | 1

| accepted