Tutorial practice files here: drive.google.c... VTK file format information for those of you who are wondering how to produce VTK files www.vtk.org/VTK...
Excellent work, well done :) Ethan, i wanted to ask if you have done any video regarding particle tracking. in particular,assuming few particles which are moving, while the points at which they are passing are connected, creating at the end the particles' path.
You can use Paraview to visualize particle movements if you have the particle location information in the file for every time step. I'm not sure if you can create a pathline from the particle movements though. You'd probably have to do some post-processing on your data to combine all of the particle paths into the same file to visualize the path in Paraview.
Great tutorial! Thanks for all tricks. About the selection data, if I make two groups on mesh, can I select different groups to show in Paraview? Think about a tube with steam flow: there are two groups of mesh: one for tube and one for steam. Can I select them separately to analyze in Paraview? Thank you so much for helping!
You can load multiple VTK files in the same Paraview session and view them together. You can perform analysis on each on separately since each calculation you add is applied to whichever "entity" you apply it to.
fantastic tutorial. I wanted to ask you a question, as someone with less engineering and more medical knowledge: you mentioned WSS visualization in Paraview. I wanted to know if I could use the calculator function in Paraview or import the WSS equation in Paraview using Python or Matlab. Would Paraview be able to calculate and visualize it? Also, do I need to open my flow data (MRI 3D flow dataset in DICOM format) in other applications like VTK first and save them as .vtu or something else for Paraview to properly open it? (because my first attempts to open DICOm flow data in Paraview did not work!) Thank you in advance for your help
As far as I am aware, Paraview can not read DICOM files. I am also not aware of any good way you can calculate WSS from the velocity field in Paraview. The dataset you are viewing needs to already contain WSS information in order for you to view it using Paraview.
Paraview will not open DICOM data, but it will open VTK data. The calculator function can perform calculations to each node, but it is not able to perform calculations involving values from different nodes. So depending on what information you have stored in the nodes, you may or may not be able to calculate WSS with Paraview.
Hi Ethan, Thanks for the introductory session. I was wondering if there was a way to use paraview to get (Stress/Strain) value at a particular point as a time function. Meaning a have 10 time steps and want to calculate the stress and strain at that particular point during each step. Thanks
+Aly Abdelaziz Yes you can use the calculator to calculate the quantity you want (as long as you have all the required information for the calculation in the data). Then you can plot the quantity over time by using a combination of appropriate filters in Paraview. I might make a video on how to do that at some point since it is a fairly useful thing to do.
Ethan: I like your instruction in this presentation. Could you give some specific help with opening a 3 column CSV file and presenting the data. The concept seems simple enough, but I have managed not been successful in doing it. Thanks, Gary
It depends on what you want to do with the 3 columns of data. If you just want to produce a line plot or something of similar nature, you can easily load it into Matlab using load('filename'), or just open it with excel and plot them that way.
Sorry for my poor english. Can you help me? I want to make cfd analysis to a 3d wing (drawed with catia). Can ı import catia file to paraview. And what is role paraview about cfd?
Paraview does not perform simulations, only allows you to manipulate and visualize data. You can export the processed results as a file so if one of the export file formats is compatible with your target software then it could work.
Hi Ethan, great video. I have a question. When I import my vtk file to paraview, when I turn the legend 'on', I see that the legend starts with some value as opposed to zero (in your case you have zero and I feel that makes sense). Do you know what that is? Could you please help me with this? Thanks
Depending on what parameter you have the legend showing, the legend might not start from zero if the lowest value of the parameter is not zero. You can adjust how the legend shows up via the legend window shown in the video around 2:40
Hello Ethan. How did you create that vtu model? is there any easy-to-use tool like a CAD software you can use in Linux to create your models and then use them into Paraview? thank you!
Hey Carlos. The specific vtu files in the tutorial were created by our custom flowsolver software. But you can also easily write some code to create vtk files with some knowledge of the appropriate format for vtk files www.vtk.org/VTK/img/file-formats.pdf In fact I have published some Matlab code that creates vtk files from PCMRI data here free tools | etkung
hi ethan. I'm working on a school project to detect vortexes. however I need lots of data to work on. I've found some however they are not enough. do you know where I can find such data?
+Drinking Curry I don't know where you can find lots of vortex data. you might look up researchers working on related fields and see if any of them has data published online that you can download.
Hard to see your cursor. Especially with a fruit fly buzzing around in front of my monitor. Please make more videos like this, but find a why to highlight the cursor. Some people make a yellow spot surround the cursor.
![[Paraview Tuto 2] Understanding the User Interface](http://i.ytimg.com/vi/oeAVgkkD4Vg/mqdefault.jpg)
![[ Paraview Tutorial 5 ] Vector Visualization and Streamlines](http://i.ytimg.com/vi/1jml3j3BmUg/mqdefault.jpg)
Nice tutorial Ethan. Thank you very much for sharing
OMG I was looking for tutorials for Paraview and thought your voice sounds familiar.
Can't believe I found you here Ethan! lol.
Thank for the tutorial video, very nice presentation! Good for paraview beginners like me.
Ethan, I found this youtube by accident. Very helpful. Thanks!
haha cool. Actually I was just talking to another friend recently who also found this randomly on UA-cam. Hope it was helpful!
What an amazing tutorial! Thanks about what you have done, Ethan!
glad the video is helpful!
Tnka you. Very useful video.
Thanks for the video Ethan!- was a great intro
Thank you, very informative video
Excellent work, well done :) Ethan, i wanted to ask if you have done any video regarding particle tracking. in particular,assuming few particles which are moving, while the points at which they are passing are connected, creating at the end the particles' path.
You can use Paraview to visualize particle movements if you have the particle location information in the file for every time step. I'm not sure if you can create a pathline from the particle movements though. You'd probably have to do some post-processing on your data to combine all of the particle paths into the same file to visualize the path in Paraview.
Paraview can plot streamlines based on instantaneous velocity, but I am not aware that it can plot the pathline of a particle as you are describing..
Great tutorial! Thanks for all tricks. About the selection data, if I make two groups on mesh, can I select different groups to show in Paraview? Think about a tube with steam flow: there are two groups of mesh: one for tube and one for steam. Can I select them separately to analyze in Paraview? Thank you so much for helping!
You can load multiple VTK files in the same Paraview session and view them together. You can perform analysis on each on separately since each calculation you add is applied to whichever "entity" you apply it to.
fantastic tutorial. I wanted to ask you a question, as someone with less engineering and more medical knowledge:
you mentioned WSS visualization in Paraview. I wanted to know if I could use the calculator function in Paraview or import the WSS equation in Paraview using Python or Matlab. Would Paraview be able to calculate and visualize it?
Also, do I need to open my flow data (MRI 3D flow dataset in DICOM format) in other applications like VTK first and save them as .vtu or something else for Paraview to properly open it? (because my first attempts to open DICOm flow data in Paraview did not work!)
Thank you in advance for your help
As far as I am aware, Paraview can not read DICOM files. I am also not aware of any good way you can calculate WSS from the velocity field in Paraview. The dataset you are viewing needs to already contain WSS information in order for you to view it using Paraview.
Paraview will not open DICOM data, but it will open VTK data. The calculator function can perform calculations to each node, but it is not able to perform calculations involving values from different nodes. So depending on what information you have stored in the nodes, you may or may not be able to calculate WSS with Paraview.
Hi Ethan,
Thanks for the introductory session.
I was wondering if there was a way to use paraview to get (Stress/Strain) value at a particular point as a time function. Meaning a have 10 time steps and want to calculate the stress and strain at that particular point during each step.
Thanks
+Aly Abdelaziz Yes you can use the calculator to calculate the quantity you want (as long as you have all the required information for the calculation in the data). Then you can plot the quantity over time by using a combination of appropriate filters in Paraview. I might make a video on how to do that at some point since it is a fairly useful thing to do.
Ethan:
I like your instruction in this presentation. Could you give some specific help with opening a 3 column CSV file and presenting the data. The concept seems simple enough, but I have managed not been successful in doing it.
Thanks,
Gary
It depends on what you want to do with the 3 columns of data. If you just want to produce a line plot or something of similar nature, you can easily load it into Matlab using load('filename'), or just open it with excel and plot them that way.
You should be able to use Matlab or Excel to open a simple CSV file
Thanks for that valuable information. Could you go over running paraview in parallel?
I've never used parallel processing in Paraview, so am afraid cannot help there...
A good tutorial, thanks!
Hello, could you please can you guide me to data that simulate vein and blood flow in paraview?
Sorry for my poor english. Can you help me? I want to make cfd analysis to a 3d wing (drawed with catia). Can ı import catia file to paraview. And what is role paraview about cfd?
do u happend to know how to import paraview simulation or animation results into unity or blender...??
Paraview does not perform simulations, only allows you to manipulate and visualize data. You can export the processed results as a file so if one of the export file formats is compatible with your target software then it could work.
Hi Ethan, great video. I have a question. When I import my vtk file to paraview, when I turn the legend 'on', I see that the legend starts with some value as opposed to zero (in your case you have zero and I feel that makes sense). Do you know what that is? Could you please help me with this? Thanks
Depending on what parameter you have the legend showing, the legend might not start from zero if the lowest value of the parameter is not zero. You can adjust how the legend shows up via the legend window shown in the video around 2:40
Hello Ethan. How did you create that vtu model? is there any easy-to-use tool like a CAD software you can use in Linux to create your models and then use them into Paraview? thank you!
Hey Carlos. The specific vtu files in the tutorial were created by our custom flowsolver software. But you can also easily write some code to create vtk files with some knowledge of the appropriate format for vtk files www.vtk.org/VTK/img/file-formats.pdf In fact I have published some Matlab code that creates vtk files from PCMRI data here free tools | etkung
Great Tutorial!
well done. I am thinking, how transfer vtk into vtu
Paraview can open VTK as well, so you don't need to convert it to VTU
Very nice!
How big is an individual file. I'm having trouble with it reading my 45 MB file. It reads smaller files...
45 MB should be okay, I think I've opened larger files before. So the trouble you're having might not be a file size issue..
hi ethan. I'm working on a school project to detect vortexes. however I need lots of data to work on. I've found some however they are not enough. do you know where I can find such data?
+Drinking Curry I don't know where you can find lots of vortex data. you might look up researchers working on related fields and see if any of them has data published online that you can download.
+Ethan Kung thank you!
please how do you lump multiple files into one file ?
Name all the files with the same prefix and load them as one entity as shown in the video around 1:00
Hi ethan, ur surname in swedish means King. ur the King.
lol actually people mis-spell my last name as King all the time...
Does the program not open .vtk files?
it should open .vtk files provided the file is written in correct vtk format...
Yes Paraview will open VTK files
google drive link not working
Should work, I just tried it. Maybe google server was down when you tried...
@@ethankung1607 thank you so much its working....:-)
Hard to see your cursor. Especially with a fruit fly buzzing around in front of my monitor. Please make more videos like this, but find a why to highlight the cursor. Some people make a yellow spot surround the cursor.
Good point-- never thought of that... haha. Thanks for the suggestion.