# Free 3-D Grapher. **URL:** \ **Category:** In My Humble Opinion\ **Created:** [April 12, 2014, 6:07pm UTC](https://boards.straightdope.com/t/free-3-d-grapher/685948 "2014-04-12T18:07:39Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Jim\_B](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/jim_b/32/4338_2.png) [@Jim\_B](https://boards.straightdope.com/u/Jim_B)\ **Post date:** [April 12, 2014, 6:07pm UTC](https://boards.straightdope.com/t/free-3-d-grapher/685948/1 "2014-04-12T18:07:39Z")
You’ll have to forgive me. I am a little light on the math lingo (it has been quite some time since I took a math class). But about 10 years ago, I downloaded this really nice three-dimensional graphing program off the internet. You enter in the function, and it graphs it for you. It had a lot of other features too. It was really nice–and as I said, it was free, too. Anyways, I have since gotten another computer. And I didn’t save the old program. But I have to ask, Do any of you know of any really nice 3-D graph programs, _ **for free** _? Actually, that isn’t even my greatest dream. What I actually would really like, even more so than this, is a 4-D grapher, with time as the fourth dimension. But since I am looking for something for free, I suppose that would be asking too much. Well:)? ---
**Author:** ![Thudlow\_Boink](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/thudlow_boink/32/320_2.png) [@Thudlow\_Boink](https://boards.straightdope.com/u/Thudlow_Boink)\ **Post date:** [April 12, 2014, 6:50pm UTC](https://boards.straightdope.com/t/free-3-d-grapher/685948/2 "2014-04-12T18:50:55Z")
I don’t know whether it’s the one you’re thinking of, but [Winplot](http://math.exeter.edu/rparris/winplot.html) can draw both 2-D and 3-D graphs, has a bunch of nice features, and is free. ---
**Author:** ![Dr.Strangelove](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/dr.strangelove/32/6613_2.png) [@Dr.Strangelove](https://boards.straightdope.com/u/Dr.Strangelove)\ **Post date:** [April 12, 2014, 8:14pm UTC](https://boards.straightdope.com/t/free-3-d-grapher/685948/3 "2014-04-12T20:14:18Z")
I still use [GraphCalc](http://www.graphcalc.com/). It hasn’t been updated in some time, but it still works reasonably well. ---
**Author:** ![Kyrie\_Eleison](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kyrie_eleison/32/7682_2.png) [@Kyrie\_Eleison](https://boards.straightdope.com/u/Kyrie_Eleison)\ **Post date:** [April 12, 2014, 11:37pm UTC](https://boards.straightdope.com/t/free-3-d-grapher/685948/4 "2014-04-12T23:37:17Z")
I use [gnuplot](http://www.gnuplot.info/) for a lot of stuff. It can be a bit fiddly, but if you put the time into it, you can get some really nice graphs. ---
**Author:** ![Jragon](https://avatars.discourse-cdn.com/v4/letter/j/e19b73/32.png) [@Jragon](https://boards.straightdope.com/u/Jragon)\ **Post date:** [April 12, 2014, 11:45pm UTC](https://boards.straightdope.com/t/free-3-d-grapher/685948/5 "2014-04-12T23:45:20Z")
Wolfram alpha will do it, for example [z=x+y](http://www.wolframalpha.com/input/?i=z%3Dx%2By) To fiddle with the graph you do have to have a pro account, though, which does cost $5 a month but as far as I know allows pretty much infinite fiddling. (Also, I’m not sure how you’d do a 4D grapher unless you mean a grapher that allows you to enter a 4D function and look at arbitrary 3D “slices”). ---
**Author:** ![twickster](https://avatars.discourse-cdn.com/v4/letter/t/ec9cab/32.png) [@twickster](https://boards.straightdope.com/u/twickster)\ **Post date:** [April 13, 2014, 1:37am UTC](https://boards.straightdope.com/t/free-3-d-grapher/685948/6 "2014-04-13T01:37:28Z")
Moved Cafe Society --\> IMHO.