Library - WolframAlpha - Query API

Arduino

Allows your application to submit free-form queries similar to the queries one might enter at the Wolfram|Alpha website.

Input

AppID The App ID provided by Wolfram|Alpha.
Input Specifies the input string (e.g., "5 largest countries").

Optional Input

Assumption Up to 10 comma-seperated assumptions to narrow a query. Wolfram|Alpha provides you with a list of assumptons in the response of a previous query. Please consult the documentation for more details.
Async Set to true to specify that asynchronous mode should be used. This allows partial results to come back before all the pods are computed.
ExcludePodID Specifies the IDs of the pod(s) to exlude from the response. All pod IDs are returned by default.
Format The desired result formats separated by commas. Valid values are image, plaintext, minput, moutput, cell, mathml, imagemap, sound, wav. Defaults to "plaintext,image".
FormatTimeout The number of seconds to allow Wolfram Alpha to spend in the "format" stage for the entire collection of pods. Default value is 8.0.
IgnoreCase Whether to force Wolfram Alpha to ignore case in queries. Defaults to false.
IncludePodID Specifies the IDs of the pod(s) to include in the response. All pod IDs are returned by default.
Latitude When query results depend on your location, use this parameter to specify a latitude point.
Location When query results depend on your location, use this parameter to specify a location such as "Los Angeles, CA", or "Madrid".
Longitude When query results depend on your location, use this parameter to specify a longitude point.
Magnification Controls the magnification of pod images. The default value is 1.0, indicating no magnification.
MaxWidth Used to change the default width of pod images. Width and MaxWidth apply to images of text and tables. This can be used to avoid undesirable line breaks if the value of Width is too small.
ParseTimeout The number of seconds to allow Wolfram Alpha to spend in the "parsing" stage of processing. Default value is 5.0.
PlotWidth Controls the width at which plots and graphics are rendered. The default value is 200 pixels.
PodIndex Specifies the index of the pod(s) to return. This is an alternative to specifying pods by title or ID. You can give a single number or a sequence like "2,3,5".
PodState Specifies a pod state change, which replaces a pod with a modified version, such as a switch from Imperial to metric units.
PodTimeout The number of seconds to allow Wolfram Alpha to spend in the "format" stage for any one pod. Default value is 4.0.
PodTitle Specifies the titles of the pod(s) to include in the response. All pod titles are returned by default. You can use * as a wildcard to match zero or more characters in pod titles.
Reinterpret Whether to allow Wolfram Alpha to reinterpret queries that would otherwise not be understood. Defaults to false.
ResponseFormat The format for the response. Valid values are JSON and XML. This will be ignored when providng an XPath query because results are returned as a string or JSON depending on the Mode specified.
Scanner Specifies that only pods produced by the given scanner should be returned. (e.g. Numeric, Music). Defaults to all pods.
ScanTimeout The number of seconds to allow Wolfram Alpha to compute results in the "scan" stage of processing. Default value is 3.0.
Translation Whether to allow Wolfram Alpha to try to translate simple queries into English. Defaults to true.
Units Lets you specify the preferred measurement system, either "metric" or "nonmetric" (U.S. customary units).
Width Used to change the default width of pod images. The default is 500 pixels. Width and MaxWidth apply to images of text and tables.
XPath An XPath query to apply to the API results.
XPathMode Valid values are "select" (the default) or "recursive". Recursive mode will iterate using the provided XPath. Select mode will return the first match at the position indicated by the provided XPath.
XPathRegex A regular expression that can be applied to the result of the XPath query provided.

Output
Actuator Trigger Condition
If{"Response":{"type":"","description":"The response from Wolfram Alpha."},"Success":{"type":"boolean"}}
Response
Response
Success
contains then write
High Low
to at 12
- Response The response from Wolfram Alpha.
CHOREO CLASS
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Notes

This Choreo allows your application to submit free-form queries similar to the queries one might enter at the Wolfram|Alpha website. The documentation for this Wolfram Alpha resource can be found here.

Note that there are a few special inputs that can be used to simplify the XML response returned from the Wolfram|Alpha API. To parse a specific value found in an element of the response, you can specify an XPath query to be applied to the response XML. By default, an XPath query functions in "select" mode, but you can use the XPathMode input to change the mode to "recursive" which can be used to iterate through the XML at the position specified by the XPath query. Finally, the XPathRegex input can accept a regular expression which is applied to the result of the XPath query.

Below is an example where an XPath query is specified in order to parse the <plaintext> node at position 2, and apply a regular expression to find only the decimal number in the result.

AppID: {YOUR WOLFRAM ALPHA APP ID}
Input: APPL
XPath: /queryresult/pod[position()=2]/subpod/plaintext
XPathRegex: \d+.\d+

In this example, when using the search input "APPL", the value of the <plaintext> without applying the regular expression would look like this:

$517.32 (AAPL | NASDAQ | 1:06:55 pm PST | 1 hr 12 mins ago)

If the regular expression is provided, the Choreo will search the string using the regex pattern, and return only the decimal: 517.32

The complete XML response from the Wolfram|Alpha API can contain information that can be parsed and used in subsequent queries. For example, the <assumptions> tell you what assumptions Wolfram|Alpha made about certain parts of the input, and what the alternative values are for each assumption. You could use this information to resubmit a query using a different assumption about the meaning.

The assumptions can be found in the <assumptions/> element in the response:

<assumptions count="1">
    <assumption type="SubCategory" word="largest" template="Assuming &quot;${word}&quot; refers to ${desc1}. Use ${desc2} instead" count="3">
        <value name="Area" desc="total area" input="*DPClash.CountryP.largest-_*Area-"/>
        <value name="GDPUSD" desc="GDP" input="*DPClash.CountryP.largest-_*GDPUSD-"/>
        <value name="Population" desc="population" input="*DPClash.CountryP.largest-_*Population-"/>
    </assumption>
</assumptions>

In above sample, the assumptions Wolfram|Alpha provides are:

*DPClash.CountryP.largest-_*Area-
*DPClash.CountryP.largest-_*GDPUSD-
*DPClash.CountryP.largest-_*Population-

The following is a sample of the XML information returned by this Choreo:

<?xml version="1.0" encoding="UTF-8"?>
<queryresult success="true" error="false" numpods="9" datatypes="Financial" timedout="" timedoutpods="Daily returns versus S&amp;P 500,Company information,Company logo,Company management" timing="9.152" parsetiming="0.092" parsetimedout="false" recalculate="" id="MSPa9091ig2bcid00a21e1600003ag5727bc585885h" host="http://www5a.wolframalpha.com" server="7" related="http://www5a.wolframalpha.com/api/v2/relatedQueries.jsp?id=MSPa9101ig2bcid00a21e1600000decc3e0667a721b&amp;s=7" version="2.6">
<pod title="Input interpretation" scanner="Identity" id="Input" position="100" error="false" numsubpods="1">
    <subpod title="">
        <plaintext>Apple  (AAPL)</plaintext>
        <img src="http://www5a.wolframalpha.com/Calculate/MSP/MSP9111ig2bcid00a21e1600005hef6ie1d5f7f5d9?MSPStoreType=image/gif&amp;s=7" alt="Apple  (AAPL)" title="Apple  (AAPL)" width="89" height="18"/>
    </subpod>
</pod>
<pod title="Latest trade" scanner="FinancialData" id="Quote" position="200" error="false" numsubpods="1" primary="true">
    <subpod title="">
        <plaintext>$517.32 (AAPL | NASDAQ | 1:06:55 pm PST | 1 hr 21 mins ago)</plaintext>
        <img src="http://www5a.wolframalpha.com/Calculate/MSP/MSP9121ig2bcid00a21e16000039e470b8b31ggda7?MSPStoreType=image/gif&amp;s=7" alt="$517.32 (AAPL | NASDAQ | 1:06:55 pm PST | 1 hr 21 mins ago)" title="$517.32 (AAPL | NASDAQ | 1:06:55 pm PST | 1 hr 21 mins ago)" width="348" height="18"/>
    </subpod>
    <states count="1">
        <state name="More" input="Quote__More"/>
    </states>
</pod>
<warnings count="1">
    <spellcheck word="APPL" suggestion="apple" text="Interpreting &quot;APPL&quot; as &quot;apple&quot;"/>
</warnings>
<sources count="1">
    <source url="http://www.wolframalpha.com/sources/FinancialDataSourceInformationNotes.html" text="Financial data"/>
</sources>
</queryresult>

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