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large dataframe handling doesn't finish #119
Description
Before submitting an issue please be sure to answer these questions with yes:
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Did you follow the official installation instructions?
If you have an installation problem, a segfault,
caught illegal operation,cannot open shared object file, …
and installed IRkernel using Anaconda, please report your issue to them instead. -
Did you reproduce the error with the newest versions? If the following code installs packages, you didn’t yet!
old_pkgs <- intersect(old.packages()[, 'Package'], c('IRkernel', 'IRdisplay', 'repr')) if (length(old_pkgs) > 0) install.packages(old_pkgs)
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Did you include a minimal reproducible example?
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Is this the right repository?
If the way a value is displayed is ugly or you got
ERROR while rich displaying an object,
go to IRkernel/repr/issues/new instead.
Activity
xu-huiyan commentedon Jun 11, 2019
I am handling a large data of 9M rows. Executing a head(db) or print(db[1,]) takes forever in notebook and never finish, but no error message is produced. It takes 1 second in rstudio.
What could be potential reason for this? Thank you so much in advance...
flying-sheep commentedon Jun 11, 2019
You didn’t create a reproducible example. Please create a code block with some code that creates and displays a data.frame that takes much longer to display than in RStudio.
You can e.g. do
profvis::profvis({ <code> })to figure out what takes so long.flying-sheep commentedon Jun 11, 2019
Fixed in d25aad0.
Please try it out with
devtools::install_github('IRkernel/repr')(then restart the kernel and try again)Optimize has_row_names. Fixes #634