Let's take a closer look to come up with a good CSS selector to access the modal button directly in code. We will use this later.īefore moving on, we're going to have to get rid of this modal element to work with the rest of the page to get useful information. For that purpose, there's also a page.waitForSelector() function that takes a specific CSS selector and waits for an element fitting that description to appear. You want to be sure that you're not going to try interacting with things on the page that don't exist yet. This is necessary in some cases to make your scripts interact with pages in a way that is more "human", especially on pages that have animations which could take time to finish. You can use the page.waitFor() function to have your headless browser script wait a number of milliseconds before running other commands. It should look something like this:ĭepending on how fast the code runs, your screenshot might look different if the disclaimer modal element didn't have enough time to finish popping up. After a couple of seconds, open the example.png image that it saved. Run the code with node index.js in your terminal from the same directory that the code is saved in. Navigate to the directory where you want this code to live and run the following command in your terminal to create a package for this project: Setting up dependenciesīefore moving on, you will need to make sure you have an up to date version of Node.js and npm installed. We'll write code to programmatically type in an address and figure out which Native land corresponds to that location. In this case, an API does exist, but it only takes location data in the form of geo-coordinates rather than a more user-friendly address. In this example we'll use the Native Land Digital tool, an awesome project built to help people learn more about their local indigenous history. Let's walk through how to use Puppeteer to write scripts to interact with web pages programmatically. Fortunately for developers everywhere, most things that you can do manually in the browser can be done using Puppeteer, a Node library which provides a high-level API to control Chrome or Chromium over the DevTools protocol. Web scraping can be useful in these situations, but only if this data can be accessed statically on a web page. It calculates eC based on the ratio of A1 and A0 peak for this ion.Sometimes the data you need is available online, but not through a public API. “status” (for debugging purposes, 0=OK, 1=no A1 peak detected, 2=no A1 peak for Ref.Ion, using other ion, 3=no Ref.Ion in CpsPerFile with highest abundance, using 2nd highest)įor each compound, it finds the sample with highest abundance for this compound, looks for a molecular ion, uses ion with highest abundance if a molecular ion was not detected.“eC” (estimated number of carbons based on A1/A0 ratio),.This script creates the columns related to For CD3.1.īased on Kaufmann et al., Simplifying Nontargeted Analysis of PFAS in Complex Food Matrixes, Multiple scripting nodes can be installed that way and the usage can be simplified for the end user by hiding the underlying scripting mechanism. This example also shows how to register a node as a “standalone” scripting node, so that it appears in the list of the nodes like a “regular” node. A very simple example that demonstrates how to export a table (Compounds), read the Molecular Weight column, add a value (+H) and return the result as a new column to CD. Download ExamplesīY DOWNLOADING ANY SOFTWARE, SCRIPTS, TEMPLATES, DOCUMENTATION AND/OR OTHER MATERIALS (COLLECTIVELY “MATERIALS”) FROM THIS WEBSITE, YOU AND ANY COMPANY OR INSTITUTION YOU REPRESENT (COLLECTIVELY “YOU”) ACKNOWLEDGE AND AGREE AS FOLLOWS: (1) THE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, AND (2) THERMO FISHER SCIENTIFIC INC., ITS AFFILIATES AND EMPLOYEES WILL NOT BE RESPONSIBLE FOR ANY DAMAGES ARISING FROM YOUR USE OF THE MATERIALS, INCLUDING BUT NOT LIMITED TO DAMAGES ASSOCIATED WITH LOSS OR CORRUPTION OF DATA, INACCURATE RESULTS, AND/OR DIMINISHED INSTRUMENT PERFORMANCE.ġ.) Hello World (sort of, in R). This manual was written for Proteome Discoverer but the same concepts also apply to Compound Discoverer.
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