$file.readBuffer to read the data from disk

[Krmjn09]

first 10 double values from data page

[silverweed]

Very good, these numbers look correct! Please be sure to mark all the temporary code as such with comments and fix the eslint warnings.

The next step after this would be to get the column type and page uncompressed size from the schema you deserialized in the header. In this case you should find that the column type is 7 (kReal64).

[silverweed]

Thanks @Krmjn09 ! The next steps (which we'll discuss tomorrow in more detail) will be to finally get to display some data using jsroot's drawing capabilities. We'll start from a 1D histogram displaying the data you deserialized from simple.root and then improve the code a bit to allow us to read different types of data.