hrbrmstr/ipv4-heatmap

Update to The Measurement Factory ipv4-heatmap codebase

ipv4-heatmap

Update to The Measurement Factory ipv4-heatmap codebase (i.e. the seminal code to generate Hilbert curve IPv4 heatmaps)

This new one uses the viridis color palette which is much easier on the eyes. You can also use a few colorbrewer palettes: brbg, puor, rdbu, rdgy, rdylbu, spectral, bupu, reds, ylgnbu, ylorbr, ylorrd via the -P palette directive and invert the sequence with the -i option.

If you really need your "blue->red" back, use -i -P rdbu

I would have included more example images but they are YUGE, so you can find them here.

Liberation Sans has been included to provide an alternative to the X11 font the original program seems desperate to use. This is an example for how to use TTF fonts (not all TTF fonts seem to work):

ipv4-heatmap -u "/24 scan\n% coverage" \
             -f extra/LiberationSans-Regular.ttf \
             -t "Example with a\nslightly large title" < extra/ip1m

ipv4-heatmap's Issues

The iana-labels.txt is empty.

I love using this tool with labels, and I love the new palette so thanks for the hard work. I used the labels previously, and much prefer to continue to do so. I have a copy from the previous version of the IPv4 Heatmap code, so we can resolve this easily.

Either I can fork and add the file for you to pull it, or you can download the older version here:
http://maps.measurement-factory.com/software/releases/ipv4-heatmap-20110505.tar.gz
And use the filled annotations files from that release in your code here.
I can confirm in advance that is still works with the old annotation file.

Keep on rawking!

Ubuntu 16.04.1 LTS build issue

Default Makefile produces the following error:
//lib/x86_64-linux-gnu/libm.so.6: error adding symbols: DSO missing from command line

Adding "-lm" to Makefile stanza fixes the problem.
ipv4-heatmap: ${OBJS}
${CC} ${LDFLAGS} -o $@ ${OBJS} ${LIBS} -lm