Great! This is going to add a lot of functionality! I can't wait to try it out, Logan Sent from my T-Mobile 4G LTE Device -------- Original message -------- From: Allin Cottrell Date:05/14/2014 8:36 AM (GMT-06:00) To: Gretl development Subject: [Gretl-devel] built-in curl() function This is a follow-up to earlier discussions of functions to retrieve data from various servers, such as the BLS. There's now a built-in curl() function in CVS (which uses the libcurl API rather than relying on the presence of a curl executable). It's very similar to the hansl function of the same name that Jack circulated. It's documented in the Function reference but its details are not set in stone at this point, so if anyone has comments/suggestions, please fire away. Allin _______________________________________________ Gretl-devel mailing list Gretl-devel(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-devel

Thanks this should add a lot of stability to the get data package. Logan Sent from my T-Mobile 4G LTE Device -------- Original message -------- From: Allin Cottrell Date:05/14/2014 1:57 PM (GMT-06:00) To: Gretl development Subject: Re: [Gretl-devel] built-in curl() function On Wed, 14 May 2014, Logan Kelly wrote: Here's a follow-up: I've also added a function named jsonget. It's in the snapshots for Windows and OS X quartz. To get use it on Linux you have to build from CVS, with the json-glib-1.0 library installed (plus its "dev" or "devel" package, if that's separate). This function takes two string arguments: the first should be a JSON buffer (as acquired via the curl function), and the second is the JsonPath to what you want. The function returns a string (with one element per line if the thing you want is an array). For the syntax of JSON paths, see https://developer.gnome.org/json-glib/stable/JsonPath.html or http://goessner.net/articles/JsonPath/ Here's a complete working example: <hansl> set echo off set messages off bundle req req.URL = "http://api.bls.gov/publicAPI/v1/timeseries/data/" req.header = "Content-Type: application/json" string s sprintf s "{\"seriesid\":[\"APU0000701111\"],\"startyear\":\"2002\",\"endyear\":\"2012\"}" req.postdata = s curl(&req) s = req.output check = jsonget(s, "$.status") if check != "REQUEST_SUCCEEDED" print "Failed to get data" quit endif string allval = jsonget(s, "$.Results.series[0].data[*].value") string allyrs = jsonget(s, "$.Results.series[0].data[*].year") string allper = jsonget(s, "$.Results.series[0].data[*].period") string val yr per printf "obs %s\n", jsonget(s, "$.Results..seriesID") loop while getline(allyrs, yr) --quiet getline(allper, per) getline(allval, val) printf "%s:%s %s\n", yr, per+1, val endloop </hansl> Allin _______________________________________________ Gretl-devel mailing list Gretl-devel(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-devel