map a graph

This time I ask something more difficult.
I have an image formed by the range of colors and I would like to extrapolate the curves that follow the color tones ... how can I do?
This is the image

thanks guys

Giulia

Replies to This Discussion

Permalink Reply by taz on March 7, 2012 at 1:47pm

Jon was able to link false color mapping directly from the analysis solver...

http://geometrygym.blogspot.com/2011/05/grasshopper---solver-result...

Permalink Reply by Giulia Arcadi on March 8, 2012 at 2:20am

page not found...

Permalink Reply by taz on March 8, 2012 at 7:13pm

Oops. I was having trouble linking directly to a particular post. Try this:

http://geometrygym.blogspot.com/2011/05/grasshopper-solver-results....

Permalink Reply by David Rutten on March 3, 2012 at 3:40am

Is it just this one image, or do you want it to work on loads of similar but slightly different images as well? If it's just this one, I'd suggest tracing over the contours by hand and then using the Extend Curve component.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Giulia Arcadi on March 3, 2012 at 3:49am

no, I should work on other similar images but with "drawings" and several different colors ...
so I 'd like to find a way to draw at least one curve for each different color.

You think is possible with grasshopper?

Permalink Reply by David Rutten on March 6, 2012 at 2:58pm

I don't think it's possible without a serious amount of custom VB/C# scripting.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Giulia Arcadi on March 7, 2012 at 2:16am

ok,thanks!

Permalink Reply by Vicente Soler on March 7, 2012 at 9:54am

The "joints" column of the spreadsheet you posted don't seem be ordered the same way as the vertices from the mesh in your rhino file. Try exporting the coordinates of these joints from sap either as a geometry file or as numerical values (another excel file). If you manage to get that i'll tell you how to create the isocurves.

Permalink Reply by Giulia Arcadi on March 7, 2012 at 10:20am

you're right. Now I try

Permalink Reply by Giulia Arcadi on March 7, 2012 at 10:51am

I exported the data of the coordinates of points but now how can I connect it to the rest?

Attachments:

120225_TesiG.gh, 38 KB
math+wb coordinate nodi.xlsx, 83 KB

Permalink Reply by Vicente Soler on March 7, 2012 at 11:11am

Here you have.

I had to move the mesh object so that's in the same place as the sap coordinates. (around 140 units in the x axis)

I internalized the excel data by copying the columns to a txt file, dragging the txt file to the canvas, connecting the "read file" component that's automatically generated to a paramameter, right clicking in the input of the parameter and selecting "internalize".

For some reason GH won't allow me to directly copy+paste more than 3900 lines.

You shold leave the read file component's and not internalize anything in case you want make changes on sap.

The mesh object is also internalized so you don't have to open the rhino file.

This will only work on meshes with an ordered set of vertices.

Permalink Reply by Giulia Arcadi on March 7, 2012 at 11:29am

I'm sorry but I use grasshopper recently and this file is very advanced for me! when I open it I will display some errors and I can not see the solution ...

Attachments: