Community Profile

Kelly Kearney

University of Washington/NOAA Alaska Fisheries Science Center

618 total contributions since 2006

Professional Interests: ocean biogeochemistry, ecosystem modeling

View details...

Contributions in
View by

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....

9 days ago | 1

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...

13 days ago | 3

| accepted

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 =...

22 days ago | 0

| accepted

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...

28 days ago | 1

| accepted

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...

29 days ago | 3

| accepted

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...

29 days ago | 1

| accepted

How to remove border line of a circle graph
set(gca, 'visible', 'off'); or axis off;

30 days ago | 1

| accepted

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),...

1 month ago | 0

| accepted

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...

1 month ago | 1

| accepted

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 = ...

2 months ago | 2

| accepted

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 = ...

2 months ago | 1

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...

2 months ago | 0

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...

3 months ago | 2

| accepted

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)

3 months ago | 1

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...

3 months ago | 1

| accepted

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 ...

8 months ago | 1

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...

8 months ago | 0

(mapping toolbox) Map axes xdata, ydata and zdata meaning?
Map axes apply a geographic transform to convert the geographic coordinates to the projection used by the map axis. You can per...

9 months ago | 2

| accepted

cut out section of x axis
Rather than shifting data and manually overriding tick labels, I prefer to use multiple axes to achieve breaks like this. The a...

9 months ago | 2

Plotting X, Y cordintions with a line short line that indicates the angle
With quiver, the u and v arguments represent the horizontal and vertical components of the arrow you want to draw. You can calc...

9 months ago | 1

| accepted

How can I assign several values from cell-array tovariables?
I think you'll need to use a quick intermediate variable so you can convert the numeric array to a comma-separated list: tmp = ...

9 months ago | 1

| accepted

How to use animated line
A couple notes here... First, plotting a graph object creates a GraphPlot object, not a line, so it can't be used (out of the b...

9 months ago | 1

| accepted

Creating a graph with both descending and ascending x-axis and one y-axis
Does this do approximately what you want? ax(1) = axes('position', [0.1 0.1 0.4 0.8], 'box', 'off', 'yaxisloc', 'left', 'xdir',...

12 months ago | 1

| accepted

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 year ago | 5

| accepted

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 year ago | 0

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 year ago | 0

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 year ago | 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 year ago | 0

| accepted

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 year ago | 2

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

1 year ago | 2