Dynamic Addition of columns in spreadsheet

I have a similar question but for the row.

I have an input box n. I want to create n+1 rows on the spreadsheet.

Thank you for your help.

First of all: what part does the spreadsheet play in your considerations?

what you have is a matrix, a matrix can handled and displayed as a whole

Formating display matrix https://wiki.geogebra.org/e...

I made a suggestion. Inputbox remain to add

Depends on what you want exactly. You can use the FillCells command (or FillRow, FillColumn), which allows you to write the contents of a list or a matrix into the spreadsheet. So if you can generate all the content for the spreadsheet beforehand (and whenever the slider changes), you can just put that into a matrix and fill the spreadsheet with it.

What's problematic is adding stuff dynamically later if you don't have absolute positions in spreadsheet format. (As far as I can see there is no way to tell Geogebra to - for example - write something in the cell in row 7, column 5. For some reason you can only read the spreadsheet that way, but not write.) The only way I see around that would be to additionally manage the content of a spreadsheet table within a matrix and refill the whole spreadsheet table from the matrix whenever you need to add/change something. (Which kinda makes using the spreadsheet somewhat superfluous aside from having a table representation of the data.)

Thank you all for your advice. Now I have a simple question.

The spreadsheet has only 100 rows.

I need 400 rows. How should I do that?

Thank you for your answer.

Try

A400=1

It works. Thank you!