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.

Answer 1

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.

Answer 2

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.

Answer 3

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

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

Answer 4

Can also be done via user interface.

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