Hi I apologize if this goes out of thread since I was not subscribed to the Perldl mailing list. I have tried to construct the email as best as possible so it falls into the thread.
> - How long have you used PDL ? Since Feb 2013. > - What PDL version do you use ? 2.4.11 > - Best thing(s) about PDL a) Super fast for very large data sets compared to R. Great support for plotting using PDL::Graphics::Prima. b) To plot say 300000 points it takes 6 seconds in PDL/Prima but takes > 1 minute in R/Gnuplot c) PDL is actually very useful if you want to do research in finance on intra-day data sets that are at micro-second level aka High Frequency Trading style :) > - Worst thing(s) about PDL a) Verbose documentation. Too much to read before utility is achieved. b) Missing examples catered to different applications of the real world. Tough to figure out how to do certain things which are relatively easy in R because they have functions to do that or examples demonstrating how to do those tasks. c) PDL::Pp is time consuming to debug. > - Any suggestions for PDL development ? We need an Advent Calendar for PDL tutorials just like Plack has one. We should have examples showing how one uses PDL to do real world research/industry related applications that make it comparable to use of NumPy/R. For example, since i work in financial tech industry a) we can show how to load say 10000 points or 100000 points and perform Linear Regression on it, b) how to use PDL to merge a C library such as TA-lib (Technical Analysis) or interface with Finance::TA perl module to do moviing averages and other statistical manipulations on data for trading purposes c) How to use PDL to demonstrate Mandelbrot/Julia sets d) the plotting tool I wrote I can write a similar one as an example to demonstrate the speed of PDL/Prima for plotting very large number of points. ... and so on... These kind of tutorials will help folks who are reluctantly using R/NumPy to continue to use Perl. More marketing is needed. I can help with some examples related to the finance world if you choose to go this route. Regards _vicash_ on #pdl _______________________________________________ Perldl mailing list [email protected] http://mailman.jach.hawaii.edu/mailman/listinfo/perldl
