hsjunnesson / wolfram.el

Wolfram Alpha integration

Wolfram Alpha integration in Emacs

Allows you to query Wolfram Alpha from within Emacs.

Installation

Install package wolfram from MELPA or download wolfram.el to a directory in your load-path. Then add this to your init file:

(require 'wolfram)

Variables

Wolfram Alpha App ID

Create an account at wolframalpha.com, then in your account select "My Apps (API)". Create a new AppID. In Emacs set that AppID as the custom variable wolfram-alpha-app-id.

Optional Dark Mode

Enable dark mode by setting wolfram-use-dark-version to t in your configuration file. Dark mode requires ImageMagick's convert utility to invert images for a dark theme. Without ImageMagick installed, image inversion will not function, and a warning will be displayed if dark mode is enabled.

(setq wolfram-use-dark-version t)

Magnification Factor

Adjust the magnification factor for images in query results using the custom variable wolfram-alpha-magnification-factor. A higher value results in larger images.

(setq wolfram-alpha-magnification-factor 1.5)

Set the factor according to your viewing preferences and display resolution.

Usage

To make a query, run M-x wolfram-alpha then type your query. It will show the result in a buffer called *WolframAlpha*.

Examples

Weather in Mombasa (dark-mode enabled)

How much does Lake Victoria weigh?

How many nukes does the United State have?

wolfram.el's Issues

Character coding is not correct

When inserting the plaintext response from the API the unicode characters do not display correctly showing instead as octal code.

Missing license

This package doesn't have a license. If all contributors agree I would opt for the GPL v3.

[Request] Change the background and foreground colors.

Hi, I have a dark theme, would there be any way to invert or change the background and foreground colors such that they fit the theme?

Doesn't work in terminal

The code seems to only insert images and not plaintext if an image is returned by Wolfram alpha and because images don't work when in the terminal nothing is shown in that case.

Images should not be inserted when in the terminal.
Plaintext should probably always be inserted (or at least have a setting).

(defun wolfram--append-subpod (subpod)
  "Appends a subpod to the current buffer."
  (let ((plaintext (car (xml-get-children subpod 'plaintext)))
        (image (car (xml-get-children subpod 'img))))
    (if (and image window-system)
        (wolfram--insert-image-from-url (xml-get-attribute image 'src)))
    (insert (format "%s\n" (car (last plaintext))))
    (insert "\n")))

I don't understand what wolfram--insert-image does (vs. Wolfram--insert-image-from-url)

Cursor should be placed at beginning of result

Cursor should be placed at beginning of result output. Many results are more than one screen long and the most relevant information is usually at the beginning.

Got 'no results for your query'

I have set up app-id as instructed. Might be API change?

Throw an error if num-pods is 0 for a query

Hi,

Here is an example query: "How much sugar does an orange have?".

If I use that as a query, all I see in the *WolframAlpha* buffer is:

# "How much sugar does an orange have? (searching)"

.. and after few seconds, that changes to:

# "How much sugar does an orange have?"

There is no indication that that search turned up with 0 results.

If I enter that API call in browser:

http://api.wolframalpha.com/v2/query?appid=<YOUR_APPID>&input=How%20much%20sugar%20does%20an%20orange%20have%3F&format=image,plaintext&parsetimeout=15&scantimeout=15&podtimeout=15&formattimeout=15

Just put in <YOUR_APPID> above.

I get

<queryresult success="false" error="false" numpods="0" datatypes="" timedout="" timedoutpods="" timing="5.513" parsetiming="1.44" parsetimedout="false" recalculate="" id="" host="http://www4f.wolframalpha.com" server="16" related="" version="2.6">
    <didyoumeans count="1">
        <didyoumean score="0.315076" level="medium">sugar orange</didyoumean>
    </didyoumeans>
</queryresult>

Suggestion

Show a message to the user along the lines that that query turned up with no results (as numpods="0").

Doesn't load any information other than the query into buffer

This is all that I get for a query

https://vid.me/saCV

Make the *WolframAlpha* buffer read-only

Can you please set the *WolframAlpha* buffer in special-mode so that the bindings like q work for killing the window.

When you are populating the buffer with "pods" in wolfram--append-pods-to-buffer, you can let-bind inhibiti-read-only to t so that the special-mode buffer is writable only within that function. What do you think?

wolfram--async-xml-for-query missing second argument callback

In function wolfram--pods-for-query, wolfram--async-xml-for-query missed the second argument callback.
And I found this function wolfram--pods-for-query is not used in program.

Usage instructions? App ID?

This seems to be the only emacs integration with Wolfram Alpha. I'm interested in using it. When I run (wolfram-alpha) it returns instantly with nothing but a new buffer with my query as an Org headline. There are no errors reported in *Messages*. I signed up for an App ID and set that in the code, but it also doesn't change anything. If I manually paste the URL it appears your code generates, with my App ID, Alpha replies,

URL: http://api.wolframalpha.com/v2/query?appid=MY_APP_ID_HERE&input="40+2"&format=image,plaintext&parsetimeout=15&scantimeout=15&podtimeout=15&formattimeout=15

<queryresult success="false" error="true" numpods="0" datatypes="" timedout="" timedoutpods="" timing="0.032" parsetiming="0." parsetimedout="false" recalculate="" id="" host="http://www5a.wolframalpha.com" server="55" related="" version="2.6" profile="EnterDoQuery:0.,StartWrap:0.032011">
<error>
<code>1</code>
<msg>Invalid appid</msg>
</error>
</queryresult>

[Feature Request]

Change image background color, this would be fantastic for those who have a dark theme.