Disable iPython Notebook Autoscrolling

Question

In iPython Notebook, is it possible to disable the autoscrolling of long outputs? Or at least set a threshold for the output length before autoscrolling sets in?

Tried the following command

%%javascript
IPython.OutputArea.auto_scroll_threshold = 9999;

but it gives an error

Javascript error adding output!
SyntaxError: Unexpected identifier
See your browser Javascript console for more details.

You may be able to edit the config file... In the meantime, if you click on the side of the result bar, it will rotate from `autoscroll` to `expanded` to `hidden`. — Reblochon Masque, Apr 21 '16 at 00:15

score 89 · Answer 1 · answered Oct 14 '18 at 14:35

89

Can also be done via user interface.

Individual cells: Cell->Current Outputs->Toggle Scrolling
All cells: Cell->All Outputs->Toggle Scrolling

answered Oct 14 '18 at 14:35

ayorgo

2,523
1
24
31

3

The problem with this answer is that you have to do this every time you execute, it is not permanent – Gonzalo Polo Oct 23 '20 at 08:09

score 78 · Answer 2 · answered Jan 14 '17 at 03:07

78

To disable auto-scrolling, execute this javascript in a notebook cell before other cells are executed:

%%javascript
IPython.OutputArea.prototype._should_scroll = function(lines) {
    return false;
}

There is also an ipython notebook extension, disable_autoscroll, you can use for a more permanent change. Follow ipython issue #2172 for the latest details.

answered Jan 14 '17 at 03:07

mtd

2,074
17
20

This doesn't work for me, when I run this, I get the same error as OP. – frmsaul May 25 '17 at 23:48
@frmsaul what version of IPython notebook are you using? Still works for me in jupyter notebook 5.x (and 4.x). – mtd Jun 15 '17 at 01:33

score 6 · Answer 3 · answered Sep 17 '20 at 06:44

6

To prevent scrolling within a single cell output, select the cell and press Shift+O while in command state. It will toggle output for that particular cell. If you want all the cells to display long outputs without scrolling, then go to the Cell tab -> All Outputs -> Toggle Scrolling. That's it !!!

answered Sep 17 '20 at 06:44

Nouman Ahsan

259
4
8

1

This should be the answer to this ask. – SouravOrii Dec 02 '21 at 04:02
You have to do this each time you run a notebook. The OP is asking about making it permanent. – user5054 May 13 '22 at 15:16

score 4 · Answer 4 · answered Oct 25 '19 at 12:33

4

This works for me (with no semicolon)

    %%javascript
    IPython.OutputArea.auto_scroll_threshold = 9999

answered Oct 25 '19 at 12:33

Hugo Richard

41
2

Can you explain a bit more? – Dieter Meemken Oct 25 '19 at 12:52
When I remove the semicolon at the end (after 9999) I don't get the error anymore – Hugo Richard Oct 26 '19 at 15:48

score 3 · Answer 5 · answered Jun 28 '17 at 06:32

3

To disable scroll to bottom after run all command, execute this code:

%%javascript
require("notebook/js/notebook").Notebook.prototype.scroll_to_bottom = function () {}

answered Jun 28 '17 at 06:32

Oldrich Svec

4,161
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52

score 2 · Answer 6 · edited May 23 '17 at 12:03

In the similar way that you can hack a cell to autorun, you can add the following cell:

%%javascript
require(
        ["notebook/js/outputarea"],
        function (oa) {
            oa.OutputArea.auto_scroll_threshold = -1;
            console.log("Setting auto_scroll_threshold to -1");
        });

which will set the auto_scroll_threshold to -1 which means never autoscroll.

This works on my notebooks that are trusted (e.g. jupyter trust notebook.ipynb), not sure if any cells are executed in untrusted notebooks.

Disable iPython Notebook Autoscrolling

6 Answers6

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