## Extracting informations from a graphic

I’m currently working on a data processing algorithm which involve (for now) grabing values from bidimentional graphs (x;y values) by hand. It is used to do polynomial fitting. I speak about this kind of graph:

Because the amount of data to extract from these graphics can be very huge (multiple lines with different parameters) I realised that it could be really time consuming for the user. All the graphs we have are pictures.

I would like to know if in the huge world of image processing something exist for extracting a finite number of points with their coordinates from a graph.

Thank you.

## Is there any operating system running in Graphic cards?

Taking an example of NVIDIA graphic cards, is there a dedicated OS running on the Graphic card’s GPU or the Host machine’s OS drivers are managing the card? The reason I ask is, these cards has a lot of cores and I would like to know how is these getting managed.

## How to plot a graphic with solution of some inequality?

I defined the function $$z(n)$$ by

z[n_] := Catch[Do[i; If[Mod[Fibonacci[i], n] == 0, Throw[i]], {i, 100000}]]

and now, I would like to plot the graphic (n,z(n)) for points such that $$z(n)/n<\epsilon$$, for some given value of $$\epsilon>0$$. For instance, for $$\epsilon=0.05$$, I used the command

Catch[Do[n; If[z[n] < 0.05*n, Print[n]], {n,1, 3000}]]

which provides me many values of $$n$$, but I do not know how to make a graphic with them (they appear in some collumn). Thanks in advance.

## Any possibility to evaluate / calculate the threads by usage of graphic card?

Would it be possible to employ the GFX card instead of CPU, for work with threads, like it would be when the video or anything that would require high power of processing can be used?
I just bought this one for video rendering: PNY NVIDIA Quadro P4000, 8GB GDDR5.

Regards,
Michal

## Veracrypt: How I can install the graphic version on ubuntu?

I downloaded Veracrypt from the official site, installed it following different tutorials, but every single time just the command line is installed, the wizard that was suppose to appear never appears.

## Using single graphic card for multiseatX

I am trying to implement multiseatX approach but I am not sure whether it is possible to use multiple monitors with single graphic card.

If yes please provide some references.

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