Category "quantmod"

What kind of object i get with input$checkboxGroupInput in shiny?

I want to do a TA dashboard in shiny and i wish to plot each indicator checked from the checkboxGroupInput the problem is when using input$my_checkboxGroupInput

yfR：Error in download.Error in `vec_slice()`: ! `x` must be a vector, not NULL

I am sure I have installed the latest packages include "quantomd":(devtools::install_github("joshuaulrich/quantmod", ref = "358-getsymbols-new.session")) But st

Error in new.session() : Could not establish session after 5 attempts

I've been facing in R the error message for days using getSymbols of the quantmod package: Error in new.session() : Could not establish session after 5 attempts

finding peaks and peak interval for non-uniform waves

Big Update I found an inefficient, but working solution for finding peaks and peak interval, although it doesn't work for multiple groups(in the code below I us

getsymbol cannot finish the whole downloading process when the share price of batch of stocks is downloaded in R from YAHOO

Recently, when I download the share price of batch of share list from yahoo, the downloading process always is stopped suddenly without any warning. Below is th