exceptional small numbers

Peter Spellucci <[email protected]> Tue, 19 Oct 2010 17:40:04 +0200

Newsgroups	gmane.comp.graphics.gnuplot.bugs
Message-ID	<[email protected]>

dear colleagues,

only recently I came into much trouble with obscure looking plots
generated automatically inside a code generating function tables and
plotting them to  *.png files:
obviously in case of numbers with a three digit exponent representation
e.g. from a standard format print in gfortran like
 0.123-150 
these are misunderstood by gnuplot (here as 0.123) , like for the file 
infquad.tab appended, although I did not change anything regarding ''set zero''.
I found nothing in the documentation which gives a warning concerning this,
maybe an oversight from my side. 
If you 
''plot "infquad.tab" using 1:2 w l ''
you get a completely erroneous picture near zero. 
My current version:

Version 4.4 patchlevel 0
        last modified March 2010
        System: Linux 2.6.32-5-amd64
best regards
p. spellucci

------------------------------------------------------------------------------
Download new Adobe(R) Flash(R) Builder(TM) 4
The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly 
Flex(R) Builder(TM)) enable the development of rich applications that run
across multiple browsers and platforms. Download your free trials today!
http://p.sf.net/sfu/adobe-dev2dev

_______________________________________________
gnuplot-bugs mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/gnuplot-bugs

infquad.tab (text/plain, 4.8 KB)

 0.5340393E-03   0.0000000E+00  -0.1368793E+00
 0.1068079E-02   0.0000000E+00  -0.1368793E+00
 0.2136157E-02   0.0000000E+00  -0.1368793E+00
 0.3180755E-02   0.0000000E+00  -0.1368793E+00
 0.4272314E-02   0.0000000E+00  -0.1368793E+00
 0.6361511E-02   0.0000000E+00  -0.1368793E+00
 0.8445974E-02   0.0000000E+00  -0.1368793E+00
 0.1272302E-01   0.0000000E+00  -0.1368793E+00
 0.1615430E-01   0.0000000E+00  -0.1368793E+00
 0.1689195E-01   0.0000000E+00  -0.1368793E+00
 0.2544604E-01   0.2681455-315  -0.1368793E+00
 0.2586955E-01   0.1059258-304  -0.1368793E+00
 0.3230860E-01   0.8541501-192  -0.1368793E+00
 0.3378389E-01   0.1195225-174  -0.1368793E+00
 0.3713468E-01   0.4177019-143  -0.1368793E+00
 0.4951344E-01   0.2196334E-77  -0.1368793E+00
 0.5173910E-01   0.2413692E-70  -0.1368793E+00
 0.6250000E-01   0.2002331E-46  -0.1368793E+00
 0.6461720E-01   0.4246901E-43  -0.1368793E+00
 0.6756779E-01   0.5479171E-39  -0.1368793E+00
 0.7426936E-01   0.1874888E-31  -0.1368793E+00
 0.7548656E-01   0.2654023E-30  -0.1368793E+00
 0.8786532E-01   0.2901602E-21  -0.1368793E+00
 0.9902688E-01   0.6092554E-16  -0.1368793E+00
 0.9913045E-01   0.6692008E-16  -0.1368793E+00
 0.1034782E+00   0.2642858E-14  -0.1368793E+00
 0.1088457E+00   0.1324195E-12  -0.1368793E+00
 0.1165540E+00   0.1389374E-10  -0.1368793E+00
 0.1218192E+00   0.1973717E-09  -0.1368793E+00
 0.1244660E+00   0.6553942E-09  -0.1368793E+00
 0.1250000E+00   0.8267805E-09  -0.1368793E+00
 0.1255340E+00   0.1039677E-08  -0.1368793E+00
 0.1281808E+00   0.3093931E-08  -0.1368793E+00
 0.1292344E+00   0.4681693E-08  -0.1368793E+00
 0.1334460E+00   0.2209049E-07  -0.1368793E+00
 0.1411543E+00   0.2589056E-06  -0.1368793E+00
 0.1485387E+00   0.1873129E-05  -0.1368793E+00
 0.1508695E+00   0.3278108E-05  -0.1368793E+00
 0.1509731E+00   0.3358438E-05  -0.1368793E+00
 0.1621347E+00   0.3409592E-04  -0.1368793E+00
 0.1745134E+00   0.2565114E-03  -0.1368793E+00
 0.1757306E+00   0.3049747E-03  -0.1368793E+00
 0.1875000E+00   0.1342394E-02  -0.1368793E+00
 0.1980538E+00   0.3959352E-02  -0.1368793E+00
 0.1982609E+00   0.4036332E-02  -0.1368793E+00
 0.2004866E+00   0.4942497E-02  -0.1368793E+00
 0.2069564E+00   0.8533656E-02  -0.1368793E+00
 0.2128653E+00   0.1336577E-01  -0.1368793E+00
 0.2176914E+00   0.1868185E-01  -0.1368793E+00
 0.2241305E+00   0.2807290E-01  -0.1368793E+00
 0.2331081E+00   0.4635458E-01  -0.1368793E+00
 0.2338457E+00   0.4815515E-01  -0.1368793E+00
 0.2415540E+00   0.6992004E-01  -0.1368793E+00
 0.2436385E+00   0.7676512E-01  -0.1368793E+00
 0.2468192E+00   0.8802457E-01  -0.1368793E+00
 0.2489319E+00   0.9605366E-01  -0.1368793E+00
 0.2494660E+00   0.9815330E-01  -0.1368793E+00
 0.2500000E+00   0.1002813E+00  -0.1368793E+00
 0.2510681E+00   0.1046224E+00  -0.1368793E+00
 0.2563615E+00   0.1278136E+00  -0.1368793E+00
 0.2668919E+00   0.1821194E+00  -0.1368793E+00
 0.2823086E+00   0.2796253E+00  -0.1368793E+00
 0.2970774E+00   0.3890234E+00  -0.1368793E+00
 0.3017391E+00   0.4258965E+00  -0.1368793E+00
 0.3019462E+00   0.4275549E+00  -0.1368793E+00
 0.3242694E+00   0.6118725E+00  -0.1368793E+00
 0.3490269E+00   0.8134525E+00  -0.1368793E+00
 0.3514613E+00   0.8323083E+00  -0.1368793E+00
 0.3750000E+00   0.1000405E+01  -0.1368793E+00
 0.3961075E+00   0.1124819E+01  -0.1368793E+00
 0.3965218E+00   0.1126988E+01  -0.1368793E+00
 0.4009731E+00   0.1149629E+01  -0.1368793E+00
 0.4257306E+00   0.1253278E+01  -0.1368793E+00
 0.4353828E+00   0.1283783E+01  -0.1368793E+00
 0.4482609E+00   0.1316408E+01  -0.1368793E+00
 0.4662161E+00   0.1347724E+01  -0.1368793E+00
 0.4676914E+00   0.1349618E+01  -0.1368793E+00
 0.4831081E+00   0.1363820E+01  -0.1368793E+00
 0.4872770E+00   0.1366012E+01  -0.1368793E+00
 0.4936385E+00   0.1368113E+01  -0.1368793E+00
 0.4978638E+00   0.1368718E+01  -0.1368793E+00
 0.4989319E+00   0.1368774E+01  -0.1368793E+00
 0.5000000E+00   0.1368793E+01  -0.1368793E+00
 0.5021362E+00   0.1368719E+01  -0.1368793E+00
 0.5127230E+00   0.1366253E+01  -0.1368793E+00
 0.5337839E+00   0.1352202E+01  -0.1368793E+00
 0.5646172E+00   0.1314614E+01  -0.1368793E+00
 0.6034782E+00   0.1248398E+01  -0.1368793E+00
 0.6038925E+00   0.1247617E+01  -0.1368793E+00
 0.6485387E+00   0.1158191E+01  -0.1368793E+00
 0.6980538E+00   0.1054431E+01  -0.1368793E+00
 0.7029226E+00   0.1044296E+01  -0.1368793E+00
 0.7500000E+00   0.9488009E+00  -0.1368793E+00
 0.7930436E+00   0.8670470E+00  -0.1368793E+00
 0.8019462E+00   0.8509229E+00  -0.1368793E+00
 0.8514613E+00   0.7664551E+00  -0.1368793E+00
 0.8707656E+00   0.7359350E+00  -0.1368793E+00
 0.8965218E+00   0.6972852E+00  -0.1368793E+00
 0.9324322E+00   0.6472175E+00  -0.1368793E+00
 0.9353828E+00   0.6432948E+00  -0.1368793E+00
 0.9662161E+00   0.6039640E+00  -0.1368793E+00
 0.9745540E+00   0.5938343E+00  -0.1368793E+00
 0.9872770E+00   0.5787766E+00  -0.1368793E+00
 0.9957277E+00   0.5690362E+00  -0.1368793E+00
 0.9978638E+00   0.5666064E+00  -0.1368793E+00