Professional Interests: ocean biogeochemistry, ecosystem modeling

Answered

i have a syntax error in u(3)-u(4)(exp((u(2)u(1)+u(6))))/(u(5))-1) what the error ?

A few missing multiplication symbols: u(2)*u(1) and u(4)*(exp...)

i have a syntax error in u(3)-u(4)(exp((u(2)u(1)+u(6))))/(u(5))-1) what the error ?

A few missing multiplication symbols: u(2)*u(1) and u(4)*(exp...)

1 month ago | 1

Answered

Specify location of clabel

I've used the FEX function gclabel in the past to do this sort of thing, though I haven't tested it in any recent versions of Ma...

Specify location of clabel

I've used the FEX function gclabel in the past to do this sort of thing, though I haven't tested it in any recent versions of Ma...

2 months ago | 0

Answered

Extracting Numbers from a mixed string

Assuming numbers only appear as properly-formatted combos, you can simply look for all number-decimal groups: b = regexp(str, '...

Extracting Numbers from a mixed string

Assuming numbers only appear as properly-formatted combos, you can simply look for all number-decimal groups: b = regexp(str, '...

2 months ago | 1

| accepted

Answered

Adjusting my time axis(x axis) accordingly

t = (0:(n-1))*(1/fs); plot(t,y1)

Adjusting my time axis(x axis) accordingly

t = (0:(n-1))*(1/fs); plot(t,y1)

2 months ago | 0

Answered

plotting 2gb worth of data

You're trying to show about 10x more data than could possibly be visualized, even on a 4K monitor. Even if you didn't run out o...

plotting 2gb worth of data

You're trying to show about 10x more data than could possibly be visualized, even on a 4K monitor. Even if you didn't run out o...

2 months ago | 0

Answered

How to make a circular graph (node connections)?

The short answer is that you can indeed make these in Matlab, but it's not simple. You basically need to recreate the calcula...

How to make a circular graph (node connections)?

The short answer is that you can indeed make these in Matlab, but it's not simple. You basically need to recreate the calcula...

2 months ago | 0

Answered

Daily average of several years data

You might also take a look at reshapetimeseries.m (part of the Climate Data Toolbox). Setting the 'bin' option to 'date' will r...

Daily average of several years data

You might also take a look at reshapetimeseries.m (part of the Climate Data Toolbox). Setting the 'bin' option to 'date' will r...

2 months ago | 0

Answered

error bars continue at other border of figure

I think the easiest way to do this would just be to plot the data, plus the data shifted one modulo to each side; the replicates...

error bars continue at other border of figure

I think the easiest way to do this would just be to plot the data, plus the data shifted one modulo to each side; the replicates...

3 months ago | 1

| accepted

Answered

Plot curve becomes jagged after 1000 data points (seems to plot one point and stretch it the length of 10)

It's difficult to say without actually seeing the underlying data... but at first glance this looks like a change in precision i...

Plot curve becomes jagged after 1000 data points (seems to plot one point and stretch it the length of 10)

It's difficult to say without actually seeing the underlying data... but at first glance this looks like a change in precision i...

3 months ago | 0

Answered

Heat (or color coded Map) in Matlab

In my opinion, the easiest way to do this is to alter the colors of the patches after plotting with mapshow/geoshow. An example...

Heat (or color coded Map) in Matlab

In my opinion, the easiest way to do this is to alter the colors of the patches after plotting with mapshow/geoshow. An example...

3 months ago | 1

| accepted

Answered

Can the vertical exaggeration of geographic axes be reduced so plots don't warp as much as they do now?

If you don't have the Mapping Toolbox, I recommend using m_map. Basically, you're asking to reinvent map projections, and that'...

Can the vertical exaggeration of geographic axes be reduced so plots don't warp as much as they do now?

If you don't have the Mapping Toolbox, I recommend using m_map. Basically, you're asking to reinvent map projections, and that'...

3 months ago | 0

Answered

What happened to the ESRI file in the mapping toolbox projection files in 2020b PR?

I'm not sure if this will work for your use case, but I wrote my shapeprjread function to parse certain projected shapefiles. I...

What happened to the ESRI file in the mapping toolbox projection files in 2020b PR?

I'm not sure if this will work for your use case, but I wrote my shapeprjread function to parse certain projected shapefiles. I...

3 months ago | 0

Submitted

boundedline.m

Plot one or more lines with a shaded boundary (can represent error, confidence intervals, etc).

3 months ago | 84 downloads |

Answered

Colour plot vs Time on a circle

It's not clear to me whether you've already created the circle plots in Matlab, or if you just sketched out your desire outcome....

Colour plot vs Time on a circle

It's not clear to me whether you've already created the circle plots in Matlab, or if you just sketched out your desire outcome....

4 months ago | 1

Answered

Contourf is plotting weird lines. How to remove them?

When you let contour choose contour levels automatically, it doesn't always choose the levels you really want. In this case, it...

Contourf is plotting weird lines. How to remove them?

When you let contour choose contour levels automatically, it doesn't always choose the levels you really want. In this case, it...

4 months ago | 3

| accepted

Answered

How can I make following part of code without for loop?

I'm having a hard time finding a solution that's faster than the original loop... % Build test data n_values = 10000; nc =...

How can I make following part of code without for loop?

I'm having a hard time finding a solution that's faster than the original loop... % Build test data n_values = 10000; nc =...

4 months ago | 0

| accepted

Answered

how to get the value in julian date and time

Can you explain what you're defining as "Julian date"? While the 4714 BCE reference date is the proper one for a real Julian da...

how to get the value in julian date and time

Can you explain what you're defining as "Julian date"? While the 4714 BCE reference date is the proper one for a real Julian da...

5 months ago | 1

| accepted

Answered

change y values in figure to names

You need to calculate where each month falls, in terms of hours: ttk = datetime(2019,1:13,1); set(gca, 'xtick', hours(ttk-da...

change y values in figure to names

You need to calculate where each month falls, in terms of hours: ttk = datetime(2019,1:13,1); set(gca, 'xtick', hours(ttk-da...

5 months ago | 3

| accepted

Answered

Is it possible to bring "grid on" to the front of a figure?

By default, all plotted objects are rendered on top of the axis (including axis lines, grid lines, etc). You can reverse that b...

Is it possible to bring "grid on" to the front of a figure?

By default, all plotted objects are rendered on top of the axis (including axis lines, grid lines, etc). You can reverse that b...

5 months ago | 2

| accepted

Answered

How to remove border line of a circle graph

set(gca, 'visible', 'off'); or axis off;

How to remove border line of a circle graph

set(gca, 'visible', 'off'); or axis off;

5 months ago | 1

| accepted

Answered

preserving the absolute location of an annotation after changing axis limits, or typing 'axis square'

You might want to try my line2arrow function; it allows you to an an arrowhead to a line (plotted with normal axis coordinates),...

preserving the absolute location of an annotation after changing axis limits, or typing 'axis square'

You might want to try my line2arrow function; it allows you to an an arrowhead to a line (plotted with normal axis coordinates),...

5 months ago | 0

| accepted

Answered

World coordinates XY scale

The imshow function automatically sets the DataAspectRatio to be [1 1 1], i.e. the same effect as axis equal. To undo this, set...

World coordinates XY scale

The imshow function automatically sets the DataAspectRatio to be [1 1 1], i.e. the same effect as axis equal. To undo this, set...

5 months ago | 1

| accepted

Answered

Counting how many times a number occured after a specific number

This is a good use case for accumarray: S = [ 3 2 2 4 3 1]; [seq, ~, g] = unique([S(1:end-1)' S(2:end)'], 'rows'); n = ...

Counting how many times a number occured after a specific number

This is a good use case for accumarray: S = [ 3 2 2 4 3 1]; [seq, ~, g] = unique([S(1:end-1)' S(2:end)'], 'rows'); n = ...

5 months ago | 2

| accepted

Answered

How do I extract the HH:MM:SS.FFF portion of a julian day time stamp?

An alternative method that avoids regular expressions would be to let datetime to the parsing for you: Data_Time_Stamp_Cells = ...

How do I extract the HH:MM:SS.FFF portion of a julian day time stamp?

An alternative method that avoids regular expressions would be to let datetime to the parsing for you: Data_Time_Stamp_Cells = ...

5 months ago | 1

Answered

Unstack - How to break a table into equal chunks of data?

I usually just use splitapply for this sort of thing. (And the kron trick is a nice one for generating repeating blocks of numb...

Unstack - How to break a table into equal chunks of data?

I usually just use splitapply for this sort of thing. (And the kron trick is a nice one for generating repeating blocks of numb...

5 months ago | 0

Answered

Plotting with four y-axes in the same figure, with multiple datasets against one of the y-axes

While there are a lot of FEX options out there, I really think it's easier to manually control things once you start playing aro...

Plotting with four y-axes in the same figure, with multiple datasets against one of the y-axes

While there are a lot of FEX options out there, I really think it's easier to manually control things once you start playing aro...

7 months ago | 2

| accepted

Answered

How do I create a 2d surface plot for a function of x and y?

Change fxy = sin(x).*cos(y) to fxy = sin(xm).*cos(ym)

How do I create a 2d surface plot for a function of x and y?

Change fxy = sin(x).*cos(y) to fxy = sin(xm).*cos(ym)

7 months ago | 1

Answered

Plotting contourf with discrete x axis

The contour function always assumes your input data are points on a surface that can be linearly interpolated between. To get a...

Plotting contourf with discrete x axis

The contour function always assumes your input data are points on a surface that can be linearly interpolated between. To get a...

7 months ago | 1

| accepted

Answered

what does the string #ok<NASGU> mean in the code editior

That code disables the Code Analyzer from suggesting changes to the syntax. Specifically, <NASGU> refers the the ID associated ...

what does the string #ok<NASGU> mean in the code editior

That code disables the Code Analyzer from suggesting changes to the syntax. Specifically, <NASGU> refers the the ID associated ...

12 months ago | 1

Answered

How to combine all columns of an array into one column?

Are the values in A always going to be less than 10? If not, what answer do you want? I see two possibilities; treat each valu...

How to combine all columns of an array into one column?

Are the values in A always going to be less than 10? If not, what answer do you want? I see two possibilities; treat each valu...

12 months ago | 0