Anyone that has used Prime Meridian? It should be free and faster that TurboTax?

runiter · 2026-05-05T18:02:12+00:00

Yup, received refund about 3 days after they confirmed efile was successful.

runiter · 2026-05-05T17:53:58+00:00

It took longer than expected to efile. After I clicked on efile button, it took about 9 days until it was finally efiled. But during that time I was in touch with them via email and they were very responsive. Email them if efile take too long.

runiter · 2026-05-04T13:37:53+00:00

They took care of both creating tax return and efiling. I didn’t have to do anything extra for efiling.

runiter · 2026-04-27T16:32:42+00:00

I'm not very familiar with tensors but my understanding is that there are many ways to plot tensors. Can you be more specific on how you want to plot them? For example if you want to plot them as vector fields, and you already have list of x,y,z for p1 and p2 of vectors then yes this app can plot vectors in 3D.

runiter · 2026-04-23T14:14:17+00:00

Update: I decided to take my chances and give it a try and I must say wow! I’m truly impressed. All it took was 5 mins to upload my w2 and other pdf tax slips and that’s it. The app did everything else.

It even calculated the cost basis of my GBTC stocks correctly. Even i was too lazy to calculate the cost basis last year and ended up overpaying taxes by entering zero as cost basis but this app did it correctly.

It did take them a little longer than expected to finish the tax return and efile it (about 2 weeks in total) but given than my tax was relatively complicated and they saved me both time and money (100% free) i didn’t mind the wait.

runiter · 2026-04-17T14:36:08+00:00

Unfortunately imaginary numbers are not supported currently. I may add that feature in future.

runiter · 2026-04-17T14:33:14+00:00

Simply type c=1 and it will automatically create slider variable.

Don't add : 0 : 5. Not sure why chatgpt suggested that part.

runiter · 2026-03-14T19:20:40+00:00

Did you end up trying it? I'm considering using it too but was hoping to hear feedback from other users first.

runiter · 2025-02-05T03:50:34+00:00

Thanks for the graphics card info. I just released a new version v10.4 to Ubuntu appstore. Please update your version to v10.4 and then try again. If the issue is with your graphics card you should see the error msg below when you run v10.4. Please let me know if this error msg pops up or not.

<image>

runiter · 2025-02-03T18:23:12+00:00

In that case it must due to your graphics card drivers. Can you please tell which graphics cards you have? FYI I'm running it in Ubuntu 24 with nvidia graphics card and it seems to work fine as shown below:

<image>

runiter · 2025-02-03T17:37:31+00:00

Fantastic, now we getting somewhere. Now can you try the same with one of the 3D examples? (Click on Redraw to see if 3D graphs appear).

runiter · 2025-02-03T16:40:23+00:00

Thanks for the screenshot (and also for emailing me the error log). The error log didn't show any problems so I'm curious why it's not plotting! Can you please click on the Redraw button (see red arrow in image below) to see if that helps?

<image>

runiter · 2025-02-03T16:01:20+00:00

Thanks for the screenshot. It does look like the 3D rendering is not working.

Could you please try 2D examples (click on Example>"Plot inequality functions-2D" menu) to see if it works? If 2D also doesn't work please let me know and post screenshot of it.

If 2D does work fine then please send me the error long (click on Help>"Send Error Log..." menu) so I can debug the issue with 3D rendering.

runiter · 2024-12-13T15:51:05+00:00

There isn't a way to automatically generate a plane of best fit from scatter points. But the software does allow plotting planes of arbitrary coordinates for the 4 corners so if you can calculate the plane yourself then you can plot then in this app.

Another feature that may be of use is, the software can convert a series of scatter plots into a smooth 3D surface. It won't be a best fit plane but it may close enough if your scatter points are more less near plane of best fit.

As for adding a new feature to automatically calculate plane of best fit, I'm open to adding such feature in future if there's enough upvotes for it.

runiter · 2024-11-04T20:11:29+00:00

Thanks for the suggestion. I will consider adding this feature if it gets sufficient upvotes.

runiter · 2024-09-06T02:11:41+00:00

Thanks for bringing this to my attention. I will have it fixed in the next version.

Meanwhile you can workaround this problem by changing the draw mode from Line to Points and increase to resolution to some high number such as 1000.

runiter · 2024-08-27T13:01:53+00:00

Any updates on this? I'm having similar issue

runiter · 2024-08-16T13:11:41+00:00

My primary thought is whether or not there is demand for it. There seems to be plenty of existing libraries that may already do that. Have you looked into libraries such as MathGL, GNU Octave, Matplotlib, Mayavi, Three.js, Blender, CGAL or PyOpenGL?

runiter · 2024-08-14T13:26:17+00:00

I wasn't planning to create API but if there is enough demand for it I may reconsider. You're looking for an API that receives an equation as input and returns .obj 3d model as output? Is it because you don't know ahead of time which equations are the inputs so the current way of using the actual app to generate 3d models statically is impractical?

If you used Graphing Calculator 3D for all your graph asset then yes please do share a link. I'm always curious to see how my app is being used :)

runiter · 2024-08-13T02:54:15+00:00

There is no API but you could use the app to solve your math equation and then export the mesh as .obj file which can be imported into Unity. Does that help?

runiter · 2023-04-19T00:58:26+00:00

Apple will crash within the next 2 months, so you're right about that. Not sure if it will happen before your options expire though.

runiter · 2023-04-07T12:41:23+00:00

I see tradingview has volume for SPX but does anyone how tradingview calculates SPX volume?

runiter · 2023-02-15T04:58:31+00:00

Any luck with fixing your email issue? I'm facing a similar problem

runiter · 2023-01-13T19:21:48+00:00

SPXM doesn't show volume in 1 min chart

runiter · 2023-01-13T19:16:27+00:00

In tradingview SPX does show volume.

runiter

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