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Re: [Gnuplot-info] Avoiding Squarish Blocky Look in False Color Charts and/or Contour Maps?
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From: Vik R. <vi...@mi...> - 2010-11-16 17:10:48
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Hi Thomas, Thanks for the feedback. I find I get a great look with the splines algorithm: set cbrange [0:115] //without this for some reason I get colors assigned to negative values, even though there are no negative values in the data being plotted set dgrid3d 400,400 splines I think my client will like this look. However, previously, they have been accustomed to the look you get on a contour chart in Excel or DeltaGraph - a look with angled, straight lines. Examples: Link to Excel sample chart: http://www.market-research-services.com/Temporary/Excel-sample.jpg Link to DeltaGraph sample chart: http://www.market-research-services.com/Temporary/DeltaGraph-sample.jpg Is there a way to get this look with Gnuplot? (I'm pretty sure there isn't because I've tried all the dgrid algorithms, but possibly I'm missing something.) And the next question: if the Excel way is such a standard that it is used by Excel and DeltaGraph - why doesn't gnuplot use it also? I'm hoping there's a very good reason that I can tell my client if they ask me. :) Thanks in advance to all for any info! Best, -Vik On Nov 16, 2010, at 3:03 AM, Thomas Sefzick wrote: > Vik Rubenfeld <vikr <at> mindspring.com> writes: > >> >> When I run a sample contour chart in Excel and in DeltaGraph, I get a > different look than I do with the false >> color map in gnuplot. The Excel and DeltaGraph charts have very straight, > angled edges, which my client >> prefers. The gnuplot chart is in squarish blocks. Is it possible to avoid this > squarish blocky look, and to >> get this look that we find in Excel and Deltagraph charts, with a gnuplot > false color or contour chart? >> ... >> gnuplot commands: >> ... >> set dgrid3d 400,400 gauss 0.35,0.35 >> ... >> splot [1:] '/Applications/Heatmaps/htdocs/ftp/Heatmaps/dataFileKey_30' matrix >> ... > > change the dx,dy values in the 'set dgrid3d' command, e.g. > > set dgrid3d 400,400 gauss 0.7,0.7 > > > > > > ------------------------------------------------------------------------------ > Beautiful is writing same markup. Internet Explorer 9 supports > standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. > Spend less time writing and rewriting code and more time creating great > experiences on the web. Be a part of the beta today > http://p.sf.net/sfu/msIE9-sfdev2dev > _______________________________________________ > gnuplot-info mailing list > gnu...@li... > https://lists.sourceforge.net/lists/listinfo/gnuplot-info |
