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 = ...

1 year 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...

1 year ago | 1

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...

1 year 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)

1 year 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...

1 year 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 ...

2 years 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...

2 years ago | 0

Answered

(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...

(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...

2 years ago | 2

| accepted

Answered

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...

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...

2 years ago | 4

Answered

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...

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...

2 years ago | 1

| accepted

Answered

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 = ...

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 = ...

2 years ago | 1

| accepted

Answered

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...

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...

2 years ago | 1

| accepted

Answered

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',...

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',...

2 years ago | 1

| accepted

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...

2 years ago | 5

| 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 ...

2 years 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...

2 years 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(:)]

2 years 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)

2 years ago | 0

| accepted

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...

2 years 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 ...

2 years 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...

2 years 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...

2 years ago | 3

| accepted

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 years ago | 1

| accepted

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 years ago | 0

| accepted

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 years ago | 0

| accepted

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 years 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 ...

3 years ago | 8

| 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...

3 years 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...

3 years ago | 2

| accepted

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 years ago | 1