search for: initial_data

Hi all, I have a data frame that has the columns OFB1, OFB2, OFB3,... OFB10. How do I select the first 8 columns efficiently without typing each and every one of them. i.e. I want something like: a<-data.frame(initial_data$OFB1-10) #i know this is wrong, what would be the correct syntax? Thanks, Sachin [[alternative HTML version deleted]]

Hi, I am trying to figure out an approach to load in our initial data into our database. I have written some load_data migrations which populate a lot of the stuff, how some of the database items are images etc and I am trying to figure out how to approach added them to the database during a rake db:migrate I am thinking if I store the files in a folder off the RAILS_ROOT I should be able to

...this gives 0 outframes: outframes := op_read_float(Data.HandleOP, at Buffer[0], Wantframesm, nil); I suspect that some callback must be defined. In opusfile library there is: OP_WARN_UNUSED_RESULT OggOpusFile *op_test_callbacks(void *_source, const OpusFileCallbacks *_cb,const unsigned char *_initial_data, size_t _initial_bytes,int *_error) OP_ARG_NONNULL(2); Maybe it is what I need in place of op_test_memory(). But I do not understand what is _source and initial_data. Also how to use OpusFileCallbacks. Some example will be highly appreciated how to use op_test_callbacks() with the memory buffe...