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19 votes
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Importing Graphics from an Online Paper

The graphics we want are on page 50, but there are six prefatory pages labelled i through vi. So we will start by loading page 56 into memory: ...
WReach's user avatar
  • 69k
18 votes
Accepted

Extracting data from analog screen photograph

Doing this with basic image processing can be done. In comparison to the post you have linked, your situation is more complicated because you have a monochrome image with no option to separate colors. ...
halirutan's user avatar
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18 votes

How can I extract data from a diagram?

this code produces the three lists of data that you want orange,blue and green ...
ZaMoC's user avatar
  • 6,717
15 votes
Accepted

COVID-19 Wolfram Data Repository Retrieval

It never updates for me properly. This is what I do: ...
Szabolcs's user avatar
  • 235k
13 votes
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Importing a Wikipedia Table as a Dataset?

After some mental hemming and hawing, I decided it'd be good to have a proper answer about importing HTML tables using something other than the often buggy "Data" ...
b3m2a1's user avatar
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12 votes
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How to make a picture grid of all Nobel Laureates in physics?

Here's something to get you started down to path of scraping the somewhat larger individual pictures from the Nobel website: ...
MarcoB's user avatar
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10 votes
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What's the fastest way to read a simple numerical list?

Your real problem is I have a large .txt file In a txt file, each number is represented by a sequence of bytes with possibly varying length followed by a ...
halirutan's user avatar
  • 113k
10 votes
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Parsing JavaScript Script from XML Trees

You have misunderstood how this works. What happens is that JavaScript calls a server-side script which returns the data, and the data is subsequently inserted into the HTML. The data cannot be found ...
C. E.'s user avatar
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9 votes
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Is it possible to import data from Google Analytics?

Since Mathematica 10 it's possible to pull data from Google Analytics using ServiceConnect and ServiceExecute. I refer you to ...
C. E.'s user avatar
  • 70.7k
8 votes
Accepted

How to plot a list of value from a .dat file?

Say, you get this with Import data = {{"#", " time", "nu=0.01", " nu=0.25", "nu=0.50", "nu=0.75", "nu=1.0", "phi(t)=exp<-t/2)"}, {0., 1., 1., 1., 1., 1., ...
Sumit's user avatar
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8 votes
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webscraping: Wolfram notebook vs browser

You can actually start and control a web browser session from Mathematica using an experimental implementation for WebDriver, Since Mathematica 11.3. Look at this answer An example ...
rhermans's user avatar
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7 votes

Import data from a current web session?

In 11.3 you can do: ExternalEvaluate[session, "JavascriptExecute" -> "return document.documentElement.outerHTML;"] In 12.0 and up, the syntax has change a ...
Arnoud Buzing's user avatar
6 votes

Extracting data from analog screen photograph

Another way: ...
Coolwater's user avatar
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6 votes
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Performance-driven approach to using Big Data without killing the hard-drive

So, a large part of this question seems to be concerned with whether or not BinaryReadList can cause meaningful damage to an underlying drive (SSD or HDD). From ...
eyorble's user avatar
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6 votes
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Export Data from several tabs in a website

Here is a start towards a solution, using the Chrome drivers that were introduced in 11.3. At this point, the Chrome drivers are still labeled as "experimental" and it shows. Many of the things that I ...
C. E.'s user avatar
  • 70.7k
5 votes

How to make a picture grid of all Nobel Laureates in physics?

Using jSoupLink: ...
C. E.'s user avatar
  • 70.7k
5 votes

COVID-19 Wolfram Data Repository Retrieval

Use ResourceUpdate for this: data = ResourceData[ResourceUpdate["Epidemic Data for Novel Coronavirus COVID-19"]];
swish's user avatar
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4 votes

How to request financial data from Yahoo's YQL and Quandl?

Just for Quandl. You can use Quandl's API guide and customize the data. For example, first download historical data for FaceBook. ...
ramesh's user avatar
  • 2,309
4 votes

How to request financial data from Yahoo's YQL and Quandl?

You can find QuandlLink package for Mathematica from following wolfram community post: http://community.wolfram.com/groups/-/m/t/540228 or https://github.com/bajracha71/Quandl-Mathematica-...
Anmol Bajracharya's user avatar
4 votes
Accepted

Importing data from notepad to mathematica

Make some sample data consisting of numbers and spaces: ...
dionys's user avatar
  • 4,331
4 votes

How to make a picture grid of all Nobel Laureates in physics?

Thanks to MarcoB and C. E. From them I learned how to deal with HTML contents using Mathematica. I now summerize my final approach below (it is a bit long, so I make it an answer). In this approach,...
matheorem's user avatar
  • 17.2k
4 votes
Accepted

Using sockets to connect to a trading platform

Please try: socket = SocketConnect[{"api.binance.com", 443}] WriteString[socket, "GET /api/v1/time \n"] message = SocketReadMessage[socket] note the "\n" message ...
Hans's user avatar
  • 956
4 votes

How to efficiently read blank line separated data file into list of lists

Example file: ...
george2079's user avatar
4 votes
Accepted

how to drop certain data points from a list

one way might be ListPlot[Re[function], PlotRange -> All] ...
Nasser's user avatar
  • 145k
4 votes

how to drop certain data points from a list

Update: How do I specify the number of points which I want to delete. Like not delete all the points but some. ...
kglr's user avatar
  • 397k
4 votes

Import data from a current web session?

Here is a fairly stupid workaround to solve the above problem. As suggested by rhermans, we can first obtain the html text of the webpage after it has finished loading: ...
Kagaratsch's user avatar
4 votes
Accepted

Import data from a current web session?

This will work on Mathematica 11.3, and not in 12 as websession[] seems to have changed. ...
rhermans's user avatar
  • 36.7k
4 votes
Accepted

How to plot data in a web page from a free dataset which updates daily?

It appears to use Socrata to manage the data. I have no experience with this API, but it appears you can access it using this form of the URL: https://www.datos.gov.co/Salud-y-Protecci-n-Social/Casos-...
flinty's user avatar
  • 25.5k
4 votes
Accepted

How to import a COVID-19 data table from a website into a Mathematica notebook

( Not an answer, extended comment.) In this particular case (the code of that site today): ...
Anton Antonov's user avatar
3 votes
Accepted

How to make a reducer in mathematica (mapreduce)

It is hard to understand why you want to proceed with an awkward procedural approach when Mathematica has elegant built-in functional methods accomplish your goal. The built-in function ...
m_goldberg's user avatar
  • 108k

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