Comments on: Cost-Import Scatterplot http://helpmeviz.com/2014/02/14/cost-import-scatterplot/ Helping people with everyday data visualizations Thu, 20 Mar 2014 15:05:38 +0000 hourly 1 http://wordpress.org/?v=3.8.1 By: Tyler Sloan http://helpmeviz.com/2014/02/14/cost-import-scatterplot/#comment-2469 Mon, 10 Mar 2014 18:14:49 +0000 http://helpmeviz.com/?p=287#comment-2469 The heatmap really helps to show the density distribution and where it is centered, and the lookup table makes it easy to see get the relative numbers in each zone. One comment I would suggest is a posible visual cue to indicate the bin size: we see this listed as 0.005, and it’s not too difficult to figure out, but having a block next to the legend of the appropriate size could help readers to see right away. Otherwise, I think the heat map is a great improvement.

I could also suggest a few changes to make to the original scatter plot if you would prefer to go in this direction. Making the points smaller would help make the point better, and I think using transparency would also really help. Having semi-transparent points could recreate the effect of the density heat-map, where areas with more samples show up darker. The added benefit (if this is a benefit) is that each of the individual data points is still represented (which is lost in the heat map).

]]> By: Joe Mako http://helpmeviz.com/2014/02/14/cost-import-scatterplot/#comment-2235 Sat, 15 Feb 2014 08:28:19 +0000 http://helpmeviz.com/?p=287#comment-2235 It seems like the field names are swapped in the data file vs the original scatter plot image. I used the field names in the data file, please let me know if I should swap these.

Also, there were 137 records where “Log a(i) ratio” was Null in the data file, I excluded these records.

For the binning of Log Share, the few records above -6 were rolled into the -6 to -7 bin, and the few records below -22 were rolled into the -21 to -22 bin.

The image here is the view I liked the most from the few charts I experimented with, you can see the others at http://public.tableausoftware.com/views/HelpMeVizCostImport/CutoffHeatmap

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