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author | John Wiegley <johnw@newartisans.com> | 2009-02-23 14:04:50 -0400 |
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committer | John Wiegley <johnw@newartisans.com> | 2009-02-23 14:04:50 -0400 |
commit | 08559bff349b8266331389c9a0c579798ce94b4c (patch) | |
tree | 829d8c4f0c12855814d1d4891889fbfc655de8ed /contrib/trend | |
parent | a61901a0923a1b4413fcc44a8ff259d309c064b0 (diff) | |
download | fork-ledger-08559bff349b8266331389c9a0c579798ce94b4c.tar.gz fork-ledger-08559bff349b8266331389c9a0c579798ce94b4c.tar.bz2 fork-ledger-08559bff349b8266331389c9a0c579798ce94b4c.zip |
Moved scripts from contrib/scripts/ into contrib/
Diffstat (limited to 'contrib/trend')
-rwxr-xr-x | contrib/trend | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/contrib/trend b/contrib/trend new file mode 100755 index 00000000..3c189c0b --- /dev/null +++ b/contrib/trend @@ -0,0 +1,30 @@ +#!/bin/sh + +# This script requires Python support. +# +# To use, just run "trend" with the accounts to compute the trend for: +# +# trend dining +# +# The trend values are not terribly meaningful, but this gives an +# example of how Python can be used to create more complex reports. + +ledger --import-stdin -T "@rdev()" reg "$@" <<EOF +import ledger + +mean = ledger.parse_value_expr ("AT") +last_mean = None +last_dev = None + +def rdev (details): + global last_mean, last_dev + mval = mean.compute (details) + if last_mean is None: + dev = ledger.Value () + else: + dev = mval - last_mean + dev = (last_dev + dev) / 2 + last_mean = mval + last_dev = dev + return dev +EOF |