Tags » GnuPlot

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

Plotting many data files and creating an animation in gnuplot

Say, you have many files with two columns of data.  If we want to plot the data in each file in a separate plot, it will take a lot of time do it manually one by one. 213 more words


GNUplot "unknown or ambiguous terminal type" error message

I bumped into the following error message from GNUplot whilst trying to plot my first histogram in Octave.

After a quick but tedious research I found that’s caused by the default installation of GNUplot on Ubuntu and its derivatives. 58 more words