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## Example procedure for working with data (attributes) inside SpatialPolygonsDataFrame objects | |
# Load my favorite libraries for that sort of work | |
library(data.table) | |
library(rgdal) | |
# Load 2 shapefiles that, say, we want to merge. | |
# Note that you can read pretty much any spatial format using readOGR(). | |
tza.l2 <- readOGR("./analysis/TZA-AC-07/maps", "tza-ac-07_L2") | |
tza.l1 <- readOGR("./analysis/TZA-AC-07/maps", "tza-ac-07_L1") |
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-- show running queries (pre 9.2) | |
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query | |
FROM pg_stat_activity | |
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' | |
ORDER BY query_start desc; | |
-- show running queries (9.2) | |
SELECT pid, age(clock_timestamp(), query_start), usename, query | |
FROM pg_stat_activity | |
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' |
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// Written by Nick Gammon | |
// February 2011 | |
/** | |
* Send arbitrary number of bits at whatever clock rate (tested at 500 KHZ and 500 HZ). | |
* This script will capture the SPI bytes, when a '\n' is recieved it will then output | |
* the captured byte stream via the serial. | |
*/ | |
#include <SPI.h> |