Using fewer mesh lines, 3D graphics

    I want to make the Final use fewer mesh lines,      the ideal version will look like the second image.     Where the triangle shape is more clear and clean. Can anyone give me some advice on how to fix my code?  

ex1 = ParametricPlot3D[{(3 + Cos[v]) Cos[u], (3 + Cos[v]) Sin[u], Sin[v]}, {u, 0, 2 Pi}, {v, 0, 2 Pi}, Boxed -> False, Axes -> False]

mesh = Import[Export[NotebookDirectory[] <> "ex1.stl", ex1]]

edges = MeshPrimitives[mesh, 1]

Final = Graphics3D[Map[Tube[#, .05] &, edges[[All, 1]]],Boxed -> False]

First image

Second image

Placing text over a rectangle using graphics

I need to add some text to rectangles that I am using as a scale bar. I want the text right above the rectangle and centered. Here’s my code:

Show[{Graphics[{Red, Rectangle[{0, 0}, {45, 15}]}, ImageSize -> 48],    Graphics[Text[Style["TEXT", 12, "TR", Black, Bold]]]}] 

enter image description here

Desired result:

enter image description here

How can I do that?

Edit: Ideally it should also work if the text is longer than the scale bar, like so:

Graphics[{Red, Rectangle[{0, 0}, {19, 15}],    Text[Style["TEXT", 14, "TR", Black, Bold], {10, 22}]},   ImageSize -> 19] 

The bar crops some of the text: enter image description here

slow and jerky Graphics in 12.1 compared to older version 9.0

Consider the following piece of code

Manipulate[ Graphics[ {{Gray, Line@Table[RandomReal[1.5 {-1, 1}, {2, 2}], {10000}]}, Dynamic[Disk[{0.1 a Cos[a], 0.12 Sin[a]}, 0.1]]}, PlotRange -> 1.5, FrameTicks -> False, Frame -> True], {a, 0, 4 \[Pi]}] 

Running the above code I find that the Graphics in newer versions of Mathematica (e.g. version 12.1) are jerky and are rendered considerably slower. I ran the same code in version 9.0 and it runs relatively smoothly.

Does someone know why this is so? and what changed between the older and the newer versions of Mathematica?

Map two input streams, one graphics objects and the other characters through Show

The question is how to sequentially execute Show with two streams of input. The first is graphics object stream and the second is a character stream for supplying labelling for the graphics. I tried

ss={{ListPlot[x1]},{ListPlot[x2],…};labelling={aa,bb,cc,dd….}; Map[Show[#1,PlotLabel->StringJoin[#2,”…”,”…”]]&,{ss,labelling}]

I tried both Map and MapThread to inconsistent results, i.e., works sometimes and not work some other times. It became consistent when I put the labelling elements into individual curly brackets, i.e., labelling={{aa},{bb},{cc},(dd)) Wonder why is this the case?

Can I convert my SMTShowMesh Object into a mathematica graphics object in AceFem?

My question is related to a string of questions Ive asked in the last few days. I’m trying to superimpose a vectorplot on a3D plot that I’ve produced on AceFem using the SMTShowMesh Command. I’m trying to get the vector field on the surface of the block to describe fibre directions at each node. I keep getting a “Could not combine the graphics objects in ” and . “Skeleton is not a Graphics3D primitive or directive.” the following graphics:enter image description here

I’m just trying to superimpose the graphics so that the vector field plot is on top the block. Without putting my whole code up, this command and a few other things is what I have tried so far.

SCnodes = StratumCorneumNodes; info = SMTNodeData[SCnodes, "X"]; Show[SMTShowMesh["BoundaryConditions" -> True] (*this is the command I used to produce the main block*),   Epilog \[RightArrow]    Inset[VectorPlot3D[{Cos[41], Sin[41], 0}, {x, MeshXmin,        MeshXmax}, {y, MeshYmin, MeshYmax}, {z, MeshZmin, MeshZmax},       Boxed -> False, Axes -> None, VectorPoints -> info,       VectorStyle -> Black, VectorScale -> Small] /.      Arrow[x_] :> Arrow[{Mean[x], Mean[x] + Last[x] - First[x]}],     StratumCorneumMastermesh[     "Wireframe"[      "MeshElementStyle" ->        Directive[{EdgeForm[], FaceForm[LightGray]}]]]]] 

I agree that the object I have produced in AceFem is not recognized as a £D graphics object in Mathematica. Is there any way I can convert it to an object? Any help would be much appreciated. Thank you

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by: kingspet
Created: —
Category: Graphics & Logos
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Unable to change screen resolution after trying to overclock nvidia graphics 1050ti

I was was trying to overclock my nvidia graphics card 1050ti but I was unable to. After restarting my pc my screen resolution is all messed up, all the icons and cursor are really big and i am unable to change the nouveau driver to nvidia driver. Image

I am also unable to change resolution of the screen through settings

-Ubuntu 18.04

-Nvidia 1050ti

-Amd ryzen 1600

How to refresh/update driver after graphics card change?

While my old graphics card (GT 730) was working normally, I removed it and installed a new one (GT 630). On both Windows and Ubuntu, the new one started with the default generic driver which supported basic screen resolutions (800×600 & 1024×768).

Driver selection grays out other options

I have 2 questions:

  1. Nvidia driver v390 supports both Fermi and Kepler, why does it not work with both graphics cards after a change?
  2. The generic driver only works for a little while on Windows (1-2 minutes) until Windows automatically recognizes and re-configures the driver to work with the new graphics card without the need of a driver re-installation. Ubuntu just sticks forever with it. How to manually make the new card work?