Hello everybody Tell me, can anyone have a node code for a grasshopper to read a csv file and then write data from this file, for example, to List<>?

A csv file has multiple rows of data, with each row having multiple values. So a List<T> can’t really store that complexity, unless each row encodes a single data item such as a point or a colour. Can you be more explicit about what the data in your csv file represents.

Thank you very much for your answer, while I’m just interested in importing the data of a simple table by row-divided into rows. the goal of all is to create a node that will take data from the table, read data from the csv file and output it to the grasshopper for example, we read this csv file, …

If you don’t really need to develop a component… (1) If your data needs to be organized the way as in your picture, use LunchBox ’s Read CSV. [image] And Create CSV to create such a file. lunchbox_csv.gh (6.5 KB) (2) If your data is organized transposed and with a header (which is probably more…

csv extractor.gh (17.1 KB) [csv extractor]

Guys thank you very much :grinning: :+1: and it is possible to make all this as in c sharp in the form of one node? can there be any example of how to correctly read the csv file and then output data on the parameter? [image]

[image] using System; using System.Collections; using System.Collections.Generic; using Rhino; using Rhino.Geometry; using Grasshopper; using Grasshopper.Kernel; using Grasshopper.Kernel.Data; using Grasshopper.Kernel.Types; using System.IO; /// <summary> /// This class will be instantiated on…

Thank you so much!!! I’ll analyze your code now, I need to understand how it works !! Rays of gratitude !!! Thank you very much!

I have to dig this up for a follow-up question. How do I reverse the process? How to generate a .csv with different columns? filename = "test.csv"; filepath = "C:/.../path/"+filename; List<String> csv = new List<String>(); csv.Add("Header 1,Header2,Header3,Header4"); csv.Add("Input1,Input2,Input3…

Have you tried using a semikolon to separate the values? [image] [image] Automate Save process for 50-100 files Grasshopper I tried the c# script suggested in this post here: [image] export_csv.gh (18.4 KB)

Worked like a charm. Thanks! And I searched for a Solution in the methods instead of just using the csv correctly.

C# csv to List script

Grasshopper Developer

martinsiegrist (Martin Siegrist) November 11, 2024, 11:05am 10

Have you tried using a semikolon to separate the values?

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C# csv to List script

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