Tags » GnuPlot

Ploting stock data using gnuplot

A time ago, pretty newbie on gnuplot, I used to create data file as gnuplot likes, normally space separated, used to copy from original one to a new gnuplot-friendly text file. 154 more words


Interactive 1D/2D Gnuplotter for multi-surface visualization

Schematic one- and two-dimensional (1D/2D) surfaces are a useful tool for visualizing qualitative trends. A lot of scientific groups in the field of theoretical chemistry, rely heavily on this type of representation to explain chemical reactivity (M. 1,336 more words


Digital filters: infinite-impulse-response filters

Yesterday I wrote a very brief introduction to z-transforms and finite-impulse-response filters.  Today I’ll try to do infinite-impulse-response (IIR) filters.  Obviously, one blog post can’t do justice to the topic, but I’ll try to get far enough that my son can implement some simple filters for his project.  1,659 more words

Digital filters: z-transform and finite-impulse response filters

My son decided to try implementing a loudness sensor on the KL25Z board—last night he designed a circuit to interface an electret microphone to the A-to-D on the KL25Z, wired it up, wrote a small test program, and got an LED to be controlled by the loudness on the microphone.  743 more words