Developed and tested by Dr. Ed Root, the IEDRO Strip Chart
Digitizer program retrieves data from scanned strip chart images
and converts them into an accurate computer-readable format.
IEDRO’s Strip Chart Digitizer Program Developed and tested by
Dr. Ed Root, the IEDRO Strip Chart Digitizer program retrieves
data from scanned strip chart images and converts them into an
accurate computer-readable format. The program is five to ten
times faster than a trained person performing hand tracing.
Hydrometeorological “strip charts” record the changes in
parameter values over time. Observational data such as
temperature, atmospheric pressure, relative humidity,
precipitation, stream flow, wind direction and speed, etc., are
recorded as a pen trace on a grid. These charts are mounted on
cylinders which rotate at a constant speed, and a pen, attached
to a mechanical device, records the changes in parameter values
over time. Depending on the speed at which the cylinder turns,
the charts may represent parameter changes ov