Task: starting with a bunch of .json files (read from stdin), generate a Google Charts javascript file on stdout.
Reward: CLAIMED!
Spec:
json-to-google-chart utility written in Python 2.7; will be released as public-domain, open source.
Input will be a series of JSON files, one after another, each of the form:
{"timestamp": 1402503121, "priority_estimates": [54187268400.0, 7974115018.0, 2321397999.0, 1258815207.0, 794378941.0, 583741516.0, 427508991.0, 338266118.0, 269237500.0, 227228318.0, 191546029.0, 168449108.0, 150728972.0, 135565268.0, 123221976.0, 117162662.0, 108344079.0, 103956121.0, 99205128.0], "fee_estimates": [0.00089285, 0.00044843, 0.00044444, 0.00044247, 0.00038759, 0.0003231, 0.00024875, 0.00021186, 0.00016207, 0.00013801, 0.00012422, 0.00011413, 0.00010395, 0.0001002, 8.62e-05, 7.457e-05, 6.016e-05, 4.464e-05, 3.891e-05]}
Command-line options will be:
--key=which_key_to_use : e.g. --key=fee_estimates or --key=priority_estimates
--values=comma-separated-list-of-indices : e.g. --values=0,5 to plot just 1-confirmation and 6-confirmation
--value_multiply=1.0 : e.g. --value_multiply=1e6 --key=fee_estimates to plot fees in micro-bitcoins
Output will be a complete .html file that uses the Google Charts API (see https://developers.google.com/chart/ ) to draw values-over-time as a LineChart. X axis will be dates (taken from "timestamp"); the unix timestamp must be converted into human-friendly date. Y axis will be floating point, starting at 0.0 (I believe Google Charts will auto-scale based on the data).
Sample input:
{"timestamp": 1402148967, "priority_estimates": [60435736872.0, 3182878368.0, 897328767.0, 303933454.0, 144259603.0, 104767493.0, 90490508.0, 79065418.0, 77081538.0, 76151857.0, 75395385.0, 73863636.0, 69082255.0, 69082255.0, 68306779.0, 68306779.0, 68306779.0, 64671619.0, 62335560.0], "fee_estimates": [0.00044843, 0.00044247, 0.00034129, 0.00022831, 0.00016207, 0.00014925, 0.00012763, 0.00012131, 0.00011441, 0.00010384, 0.00010224, 7.8e-05, 6.734e-05, 6.734e-05, 6.596e-05, 6.596e-05, 6.006e-05, 5.984e-05, 4.444e-05]}
{"timestamp": 1402372801, "priority_estimates": [62661404587.0, 10391270193.0, 2290839703.0, 1051282051.0, 587819590.0, 407959578.0, 322331912.0, 251882594.0, 222342466.0, 194832821.0, 175968997.0, 157038509.0, 147859907.0, 140718205.0, 133333333.0, 123221976.0, 115736154.0, 105463889.0, 100925000.0], "fee_estimates": [0.00052356, 0.00044642, 0.00044444, 0.00042801, 0.00038759, 0.00026809, 0.00022883, 0.00017271, 0.00012562, 0.00010604, 8.62e-05, 6.738e-05, 5.324e-05, 4.464e-05, 4.078e-05, 3.891e-05, 3.875e-05, 3.875e-05, 3.875e-05]}
{"timestamp": 1402459202, "priority_estimates": [52270908580.0, 8721998124.0, 2413703275.0, 1298293039.0, 784526998.0, 544021154.0, 397573818.0, 314609660.0, 256976166.0, 214276550.0, 187041255.0, 161243169.0, 146404234.0, 134471399.0, 123087844.0, 115736154.0, 107971270.0, 102150103.0, 95968912.0], "fee_estimates": [0.0005541, 0.00044642, 0.00044444, 0.00041493, 0.00038759, 0.00026809, 0.00024752, 0.00020831, 0.00016207, 0.00013856, 0.00012515, 0.00011764, 0.00010976, 0.00010373, 8.904e-05, 8.282e-05, 6.851e-05, 5.321e-05, 4.196e-05]}
@gavinandresen : If the shell can't expand the command "jsontocharts *.json" due to running into argument limits, then "cat *.json" is not far behind. How about "find . -name *.json |jsontocharts @/dev/stdin >estimates.html" or even "ls *.json |jsontocharts @/dev/stdin" (though that's vulnerable to argument limits again)? New version uploaded to implement @ATFILE syntax. But hey, if you insist, I'll make the script split on }{