Matlab streamslice

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When plotting streamlines in MATLAB using quiverstreamslice or similar, is it possible to extract the contour line at given contour level? Take this example I have numerical data in my case, but I will use analytical functions in the example :. If not, is it possible to obtain them otherwise? I was thinking of using contour in this way. For example, you can get the coordinates of the first traject line:. In the case of many contour levels, to extract them see here or here or using this. Now we know the coordinates of the trajectory and contour level.

Thus you can find the point s of intersection between the trajectory and the contour level. Learn more. Asked 3 years, 10 months ago. Active 3 years, 10 months ago. Viewed times. I was thinking of using contour in this way, contour X,Y,sqrt DX. BillyJean BillyJean 1, 1 1 gold badge 16 16 silver badges 32 32 bronze badges. Active Oldest Votes.

Alexander Korovin Alexander Korovin 6 6 silver badges 16 16 bronze badges. Thanks, that is helpful. However, is it possible to find the trajectory at particular contour level? Is it relevant to your question now? Sign up or log in Sign up using Google. Sign up using Facebook.

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matlab streamslice

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matlab streamslice

Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled.Description streamslice X,Y,Z,U,V,W,startx,starty,startz draws well spaced streamlines with direction arrows from vector data UVW in axis aligned x- y- z-planes at the points in the vectors startxstartystartz. The section Starting Points for Stream Plots in Visualization Techniques provides more information on defining starting points.

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UVW must be m-by-n-by-p volume arrays. You should not assumed that the flow is parallel to the slice plane. For example, in a stream slice at a constant zthe z component of the vector field, Wis ignored when calculating the streamlines for that plane. Stream slices are useful for determining where to start stream lines, stream tubes, and stream ribbons. The arrays XY define the coordinates for UV and must be monotonic and 2-D plaid as if produced by meshgrid. The default value is 1 ; higher values produce more stream lines on each plane.

For example, 2 produces approximately twice as many stream lines, while 0. See interp3 for more information interpolation methods. You can pass these values to any of the stream line drawing functions streamlinestreamribbonstreamtube.

This example uses streamslice to calculate vertex data for the stream lines and the direction arrows. This data is then used by streamline to plot the lines and arrows. Slice planes illustrating with color the wind speed are drawn by slice in the same planes.

This example superimposes contour lines on a surface and then uses streamslice to draw lines that indicate the gradient of the surface. See also contoursliceslicestreamlinevolumebounds. Specifying Starting Points for Stream Plots for related information.Documentation Help Center. The arrays XYand Zwhich define the coordinates for UVand Wmust be monotonic, but do not need to be uniformly spaced. XYand Z must have the same number of elements, as if produced by meshgrid.

The arrays X and Ywhich define the coordinates for U and Vmust be monotonic, but do not need to be uniformly spaced.

Matlab Divergence

X and Y must have the same number of elements, as if produced by meshgrid. The output argument h contains a vector of line handles, one handle for each streamline. Define options as a one- or two-element vector containing the step size or the step size and the maximum number of vertices in a streamline:. Define arrays xyuand v. Create a quiver plot of the data. A modified version of this example exists on your system. Do you want to open this version instead?

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Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance. Other MathWorks country sites are not optimized for visits from your location. Toggle Main Navigation. Search Support Support MathWorks. Search MathWorks. Open Mobile Search. Off-Canvas Navigation Menu Toggle. Define options as a one- or two-element vector containing the step size or the step size and the maximum number of vertices in a streamline: [stepsize].

Examples collapse all Draw Streamlines. Open Live Script. No, overwrite the modified version Yes. Select a Web Site Choose a web site to get translated content where available and see local events and offers. Select web site.Documentation Help Center. The arrays XYand Zwhich define the coordinates for UVand Wmust be monotonic, but do not need to be uniformly spaced. XYand Z must have the same number of elements, as if produced by meshgrid.

UVW must be m-by-n-by-p volume arrays. Do not assume that the flow is parallel to the slice plane. For example, in a stream slice at a constant zthe z component of the vector field W is ignored when you are calculating the streamlines for that plane. Stream slices are useful for determining where to start streamlines, stream tubes, and stream ribbons. The arrays X and Ywhich define the coordinates for U and Vmust be monotonic, but do not need to be uniformly spaced.

X and Y must have the same number of elements, as if produced by meshgrid. The default value is 1 ; higher values produce more streamlines on each plane. For example, 2 produces approximately twice as many streamlines, while 0. You can pass these values to any of the streamline drawing functions streamlinestreamribbonstreamtube. Load the wind data set, which loads the three-dimensional arrays uvwxyand z. A modified version of this example exists on your system.

Do you want to open this version instead? Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance. Other MathWorks country sites are not optimized for visits from your location.

Toggle Main Navigation. Search Support Support MathWorks.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am using streamslice command to visualize my flow. I want to add color depending on magnitude of velocities but there seems to be no function argument in streamslice to do so.

The function is given as:. The function produces this image. If you want to use streamsliceI can suggest something. It would need some tweaking to get it look like a cool figure, but it does the job, I guess. Look at the result. I guess that with better a colormap and with some tricks getting the data handle of the streamslice to change the line colour it could work nicely, speciall yin Matlab Rb or higher.

Learn more. Using streamslice with color for velocities Ask Question. Asked 5 years, 2 months ago. Active 5 years, 2 months ago. Viewed 1k times. You could use this quiverc function, which will look similar to the streamslice and will give you the option to assign color based on magnitude: mathworks.

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matlab streamslice

You may receive emails, depending on your notification preferences. How to plot streamlines in matlab??? Vote 0. Hi everybody, I m new. I ve this question like title.

I have to plot streamlines with circular cylinder, from PIV data of velocity. From this matrix, that represents the average values of velocity, I ve just elaborated a quiver plot with the cylinder but I need of your help to understand how can I use streamline function in matlab or if is necessary to write the strem function like fluid mechanics theory.

Slice and streamslice along diagonal

In annex the matrix. Bob Nbob on 25 Feb Cancel Copy to Clipboard. So, you already have a series of x,y values which compose the different stream lines?

Why not just plot them? That s why I m in trouble. If I use meshgrid function in matlab I obtain a square grid but the strealine are also straigth lines. Oh, so your data is velocity U,V values at certain x,y coordinates, and you want to plot arrows for those velocity vectors?We are here to help, but won't do your homework or help you pirate software.

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matlab streamslice

If you want flair simply Message the mods. TechnicalQuestion Help with Streamslice self. Hello everyone, first time posting in this subreddit, but I have been banging my head against the wall trying to solve this issue I am having. When I use the streamslice function to plot my electric field lines for a tiny parallel plate capacitor I get lines that either doesn't start on a plate or end on a plate which looks bad if this is to be a published plot.

You can see what I mean in the attached image. I don't want to use quiver unless I can make it look like streamslice with connecting lines and streamlines function does not work too well. I am actually not, streamslice doesn't require a start variable.

Streamline however does require it and when i tried that I did the start points basicly along the left edge. It looked good for that section starting at the edge and ending on the left plate but it didn't plot anywhere in the middle or right side Which while typing this I think a way to make it work would be to put the start points along the edge of the plot window. What you think? What if you set your start points at the edge of one of your plates. Would they run all the way to the second plate?

So I did try that, but it only plotted the middle portion And it only worked when put on the right plate and not the left. I guess it only wants work for the direction the field would actually flow positive blue plate to negative red plate.

But that also had some lines that didn't end on the plate in the top and bottom regions. Use of this site constitutes acceptance of our User Agreement and Privacy Policy.

How to plot streamlines in matlab ???

All rights reserved. Want to join? Log in or sign up in seconds. Get an ad-free experience with special benefits, and directly support Reddit. Welcome to Reddit, the front page of the internet. Become a Redditor and join one of thousands of communities. Want to add to the discussion? Post a comment! Create an account. Maybe something is off there. You also mention streamline isn't working so well.