also based on market data:open、high、low、close、v……quotation data.
How to use JSL to download this data to generate tables.This may be a more complicated problem, because I could not find the url of the data, and I could not get the real link of the data with the grab package software.
Usually market data is downloaded as CSV which can be easily read by JMP but I don't think this is a JMP question unless you can indicate a data source. Yahoo data is lagged by 15 minutes and I don't think you can get the actual data. To get live data from an exchange you have to pay for it - typically between $50 and $150 a month. End of day data is cheaper.