GEPHI - Introduction to Network Analysis and Visualization (Tutorial)

[@HassanBenjamin-e4y]

Am a young network science student from Ghana learning network science and i enjoy your video and also it has help me to improve and hoping to become the first network scientist in west Africa and even Ghana. Thanks for your video i will like more tutorials

[@MartinGrandjean]

Many thanks for your feedback and good luck with your future works!

[@kellimattos1147]

I'm from Brazil, your content helps me a lot. Thanks.

[@1-P3RSP3CT1VE]

Ty Martin, this tutorial, not to mention your website, is an outstanding resource. Thank you for delivering valuable content and insights.

[@MartinGrandjean]

Many thanks!

[@AdrienSales]

I still wonder how I missed this one ! It's a great one, thanks a lot for this very efficient intro....perfect to onboard people on Gephi.

[@Fjeldhammer]

I like how beautiful graphs can look! :]

[@OlamideAyodele-s1s]

I'm so glad i found this video. It helped me today. Thank you so much

[@ugjhgjf]

Thanks for the voiceover version.

[@Stelic248]

Thank you so much, this was enormously helpful in understanding how to setup my data in Gephi

[@MartinGrandjean]

Great to hear it was useful! Have fun with Gephi!

[@unscripted127]

Can you show us how to format data to nodes and edges from a sample data?

[@d.esanchez3351]

As a history student focusing on the Americas under Charles V, Im glad my bois the Habsburg and Moctezuma are in the same verse. Made my day.

[@alfian.parewangi]

Awesome, thank you.

[@oligartoon]

I would like to know which video card I need to work with 1 million nodes in gephi?

[@dhanushka1461]

Thank you very much! May I know how to make a corelative networks (Based on Pearson corelation)

[@mariatomai3528]

Hello! Thank you for this video! I have one question please. In the step you made in 6:28, when I click on this option, first the tab "Nodes" does not appear at all for me, rather only 'Global, Edges, Labels'. Then when I chek the box "nodes' under 'Labels' as you did in you video, then the nodes names still do not appear. I have double-checked and the names and everything is correct, size, color, layout changes did not work either. Do you have any ideas how to fix it? Thank you very much!

[@MartinGrandjean]

Sorry for the late response. It seems like a bug to me, I can't explain why you don't get the "Nodes" button...

[@biancavillas]

Hello, Martin! Thank you for the tutorial. Concerning the last version of Gephi (0.10.1), should I install other plugins?

[@MartinGrandjean]

Hi! The more Gephi is updated, the less plugins you generally needs as some of them are now being incorporated as default features. So, no, I don't think you need other plugins than GeoLayout (Noverlap is now built-in).

[@CraszyAsce]

Tutorial is a bit fast and assumes we know a great deal. Perhaps that is my issue though and I need a more basic tutorial.

[@209_Violate]

you''ll get there. keep going. very few get far in their pursuit of knowledge.

[@o-pilette]

Petit tuto très intéressant! Manipulations de base et puis quelques petits trucs que je ne connaissais pas. Merci!

[@MartinGrandjean]

Merci de l'intérêt ! Oui, c'est vraiment le tutoriel basique que je destine généralement aux débutants. J'espère pouvoir produire des modules plus avancés prochainement.

[@andreyevanton]

Thanks for the video! But there is no noverlap plugin(

[@MartinGrandjean]

That's right, noverlap is now available natively in Gephi, no need to install it.

[@RonakMaheshwari-ps8lo]

Sir I have a large dataset. I want to do a 2-mode network analysis and I need some help .

[@joanmanuelsdelvalle]

Martin. I've been inspired by your work on network visualization using the GEPHI software, as showcased on your KZbin channel. I am currently finalizing a book in which your insights could add significant value. I've sent you an email with a formal request for permission to use screen captures of the software visualizations featured in your video. As a token of my appreciation, I would also like to offer you a complimentary copy of my book upon its completion. More details have been provided in the email through the contact system on your website. Thank you for your contributions

[@209_Violate]

Wow. I am speechless.

[@MirrorNeuron]

can I create a mind-map like every concepts used in a complex projects using Gephi. I want to show for a single concept what are the other ingredient concepts used and so on. Also can we search the label and zoom on that label.

[@CrunchTime-x7m]

The user interface in gephi i is different now difficult for me to follow these instructions.

[@lte23401]

at 10:18, after selecting 'Geo Layout', the 'Latitude' and 'Longitude' are found in dropdown option? any suggestions? Thanks. Thanks for posting the video.

[@MartinGrandjean]

Yes, in this rather old version they show when you click on the dropdown menu but not when it's not selected anymore, it's a bug I think. But it works, displayed or not.

[@lte23401]

@@MartinGrandjean Thanks so much. Can you provide tutorial on how to "overlay Gephi svg file using Inscape" to create map-network view, 10:55 onward.

[@MartinGrandjean]

@@lte23401 It's true that the video is very quick on this part, because it's a Gephi tutorial and not an Inkscape one. But everything is here. Open the map background (the one I provide in the post), import your SVG network, move it so that it is placed correctly (you can have a look at the city names in your network to find 2 that are easy to recognise and place, like London and Hamburg, they are very visible and easy to find more or less precisely on the map), then select the names of the SVG map and bring this layer to the front.

[@lte23401]

@@MartinGrandjean Thanks for the prompt response, much appreciated and very helpful.

[@karlamelissaufcat9849]

Hello Martin, I would like to know how you set up a structure that is important within gephi

[@MartinGrandjean]

Hi, not sure to understand your question. Feel free to reach me through the contact form of my website.

[@karlamelissaufcat9849]

@@MartinGrandjean I sent it thank you

[@raj345to]

can anyone tell how to prepare nodes and edges data thuis part is confusing me. I have several clients,projects and employees. but dont know how to prepare edges table.

[@MartinGrandjean]

Did you had a look at the sample data of this tutorial? You can download it here: martingrandjean.ch/gephi-introduction It's not necessarily what you'll need to apply to your data, but at least it might give you ideas (what is important is to have the "Source" and "Target" columns).

[@raj345to]

@@MartinGrandjean thanks dear martin..its working now. But the fructerman layout has been rendering for past 1 hr and its still rendering. I have 35k nodes and 244k edges. Is there any easy way to plot such complicated data.

[@MartinGrandjean]

@@raj345to Oh but Fruchterman Reingold will never stop rendering the layout, some of these algorithms are designed in a way that force them to find an equilibrium (and there's no equilibrium in such graphs), so you need to stop it when it's more or less stable. For large datasets, Force Atlas 2 will be more efficient, btw.

[@raj345to]

@@MartinGrandjean thanks martin got some clarity.thanks for your response

[@robind_001]

Hello. Thank you for making this tutorial. I need help. I want to create a 3D visual representation of my company's Organizational Chart; you know the typical boring 2D graph pyramid of people working in a company. We have 5 departments with over 1000 employees, with many inter-departmental links. I want to move beyond the boring Powerpoint presentation of an ORG-Chart into a 3D visualization. Is this the right tool? Can you help me? Thanks. RBN

[@MartinGrandjean]

Hello, Thank you for your comment. So you have a bipartite network with 5 departments and 1000 employees? Or do you have more detail on people's affiliations? Because while there is indeed a strong vertical dimension in a bipartite, the 5/1000 difference is such that you don't need 3D to show it. Anyway, Gephi can do fake 3D with a plugin, i.e. arrange the nodes on planes and tilt them so you can see that they are different. But it is not a real 3D tool.

[@نورةمحمد-ط8ز1ظ]

Hello, I want to ask how to use Map of countries correctly so that the sites appear to me. I hope to answer quickly because I am working on a specific project, and thank you ✨

[@MartinGrandjean]

Well, Map of countries is a plugin that gets around the fact that you can't put a background map directly into Gephi: it creates points that follow the coastline, so that you can see the continents in addition to your network. It must therefore be used in conjunction with Geolayout. But I think the safest way to proceed is to spatialize the graph geographically with GeoLayout and then export the result to a vector drawing program, into which you import a background map in Mercator projection, as in the example in this tutorial.

[@VanillaRinger]

Thanks for the video. I'm curious, what hardware requirements do you recommend for Gephi?

[@MartinGrandjean]

Thank you! Well, for small to medium networks you don't need anything specific. Then, it's all about having a good deal of RAM. My 16GB Macbook Air is doing great most of the time with graphs up to 100k nodes/300k edges. For bigger graphs, you might want to have more memory.

[@wildflower009]

It can't be used unless someone explains how to organise the data into node file and edge file. How is this data structured?

[@MartinGrandjean]

This is just a tool tutorial, it can't anticipate how your raw data is ;) But having a look at the two CSV files provided in this tutorial (you can download them here www.martingrandjean.ch/gephi-introduction/) should help you understand how Gephi wants you to prepare the data.

[@wildflower009]

@@MartinGrandjean That was helpful. However I'm facing some problems. 1. I import the node sheet and edge sheet separately, new nodes are being added into the node file when I'm importing the edge file, and the node file parameters which I originally imported are not getting linked to the edge file. I'm also able to uncheck the do not 'create missing nodes' option.

[@wildflower009]

@@MartinGrandjean 2. The node labels are overlapping on the node which make them difficult to see.

[@wildflower009]

@@MartinGrandjean Due to problem 1, I have to avoid downloading the node file separately and I have to manually type in the attributes other than the node ID

[@koachscholar1962]

can you plz tell me how do we get nodes and edges csv file

[@MartinGrandjean]

The tutorial nodes and edges files? It's in the blogpost (link in the description), for the 1st dataset, edges are here: www.martingrandjean.ch/wp-content/uploads/2015/10/Edges1.csv and nodes here: www.martingrandjean.ch/wp-content/uploads/2015/10/Nodes1.csv

[@AaronHalliday]

Your link to the tutorial and data is down. I'd love to have access to this additional supporting content.

[@MartinGrandjean]

Ah ah, do you really have to try this during the few minutes my site is down for maintenance? My bad, of course :) It's online now, and you'll find the dataset there, but I'm currently updating quite a lot of things so the page will not look very good before a few hours, sorry.

[@malicksembenemboup3783]

Thanks.

[@dangisspatiallab]

Thank you 🥰🥰🥰🥰🥰

[@lindaseltzer8289]

Going too fast and continuing to speak before we have a chance to look at the screen and see what you didn't.

[@MartinGrandjean]

Yeah, this was just supposed to be a walkthrough to accompany the original tutorial on my blog (www.martingrandjean.ch/gephi-introduction/), I would have done differently for a pure standalone video.

[@nizarmota1246]

i really liked the way he spoke :(

[@MrMilarepa108]

I also liked it, otherwise it would have taken hours. You can always stop or change the speed. Great work, and thanks for being respectful of your viewers time!!

[@edoedo8058]

Not useful. You should have discussed the data types the Gephi can work with.