26 Monday Aug 2013
Posted in vim
Here are two ways to delete the blank lines in a text file opened with vim:
1. Delete all the blank lines with NO white spaces other than new lines:
:g/^$/d
2. Delete the blank lines containing any type of white spaces:
:g/^\s*$/dBONUS: Remove only multi blank lines (reduce them to a single blank line) and leaving single blank lines intact:
:g/^\_$\n\_^$/dReference: Stack Overflow.
24 Monday Jun 2013
Posted in shell
Contrary to [, [[ prevents word splitting of variable values. So, if VAR="var with spaces", you do not need to double quote $VAR in a test – even though using quotes remains a good habit. Also, [[ prevents pathname expansion, so literal strings with wildcards do not try to expand to filenames. Using [[, == and != interpret strings to the right as shell glob patterns to be matched against the value to the left, for instance: [[ "value" == val* ]].
Reference: here
08 Friday Mar 2013
Let’s look at an example data file first:
+2 +2 10.0 +1 +1 9.0 0 0 7.8 +1 -1 17.0 +2 -2 1.2
We want to plot the numbers in the third column in the y-axis with (+2,+2), (+1,+1), .., (+2,-2) as the corresponding x-values.
There are two aspects to deal with here, namely
(1) to use strings as (x)tic labels —> xticlabels function can handle that.
(2) to combine two numbers in two different columns into a single string —> sprintf function can handle that.
Here’s what a sample gnuplot command would look like
gnuplot> plot using ($0):3:xticlabels( sprintf("(%+d,%+d)",$1,$2) ) with linespoints
19 Saturday Jan 2013
Posted in plot
Following is the script to plot the data in “data.txt” as contours (with color shades):
# Set terminal and output
set terminal postscript enhanced color
set output 'plot.ps'
# Set various features of the plot
set pm3d
unset surface # don't need surfaces
set view map
set contour
set key outside
set cntrparam cubicspline # smooth out the lines
set cntrparam levels 50 # sets the num of contour lines
set pm3d interpolate 20,20 # interpolate the color
# Set a nice color palette
set palette model RGB defined ( 0"black", 1"blue", 2"cyan",3"green",4"yellow",\
5"red",8"purple" )
# Axes
set xlabel 'COC angle (degree)'
set ylabel 'C-H distance (angstrom)'
set format x '%.1f'
set format y '%.1f'
set format z '%.2f'
# Now plot
splot 'data.txt' using 1:2:3 notitle with lines lt 1
Here’s a sample data file “data.txt”: (click to view)
##################################################### # Listed are the two lowest energies E0 and E1 as # functions of angle aCOC and distance rCH in the # following ion # # O- # / # H - C # \ # O # ##################################################### # #aCOC rCH E0(aCOC, rCH) E1(aCOC, rCH) #===== ====== ================ =============== 80 0.75 -187.9181147924 -187.9158295252 80 0.80 -187.9713312339 -187.9661878018 80 0.85 -188.0105136203 -188.0049447368 80 0.90 -188.0373188825 -188.0312605047 80 0.95 -188.0547148942 -188.0481051036 80 1.00 -188.0649656397 -188.0577399331 80 1.05 -188.0698170896 -188.0619080135 80 1.10 -188.0706328906 -188.0619723592 80 1.15 -188.0685050145 -188.0590323048 80 1.20 -188.0644917047 -188.0546633389 80 1.25 -188.0597160477 -188.0490819904 80 1.30 -188.0539382368 -188.0424343828 80 1.35 -188.0474877143 -188.0350887983 80 1.40 -188.0406394801 -188.0273355872 80 1.45 -188.0336082521 -188.0194021043 80 1.50 -188.0265610977 -188.0114609822 80 1.55 -188.0678564251 -188.0143924120 80 1.60 -188.0679692408 -188.0100172712 80 1.65 -188.0687205158 -188.0053470361 80 1.70 -188.0697815991 -188.0005894930 80 1.75 -188.0709581140 -187.9958838707 80 1.80 -188.0721406231 -187.9913185539 80 1.85 -188.0732798876 -187.9869388013 80 1.90 -188.0743498041 -187.9827745072 80 1.95 -188.0753405189 -187.9788418674 80 2.00 -188.0762508640 -187.9751480979 80 2.05 -188.0770838055 -187.9716945532 80 2.10 -188.0778440633 -187.9684785367 80 2.15 -188.0833154714 -187.9688328784 80 2.20 -188.0837635328 -187.9691478323 80 2.25 -188.0841770785 -187.9694389517 80 2.30 -188.0845557718 -187.9697058672 80 2.35 -188.0849001847 -187.9699484088 80 2.40 -188.0852112318 -187.9701669934 80 2.45 -188.0854903646 -187.9703622593 80 2.50 -188.0857391850 -187.9705352665 80 2.55 -188.0859594829 -187.9706872793 80 2.60 -188.0861535155 -187.9708193368 80 2.65 -188.0863231745 -187.9709329469 80 2.70 -188.0864704115 -187.9710295709 80 2.75 -188.0865972395 -187.9711105520 80 2.80 -188.0867050982 -187.9711777035 80 2.85 -188.0867964173 -187.9712317295 80 2.90 -188.0868726204 -187.9712741915 80 2.95 -188.0869352610 -187.9713063715 80 3.00 -188.0869858378 -187.9713294501 90 0.75 -188.0434255816 -187.9643587820 90 0.80 -188.0991892997 -188.0197576293 90 0.85 -188.1386710232 -188.0587850504 90 0.90 -188.1658149131 -188.0853844547 90 0.95 -188.1835938739 -188.1025245567 90 1.00 -188.1942718698 -188.1124675958 90 1.05 -188.1995928411 -188.1169549625 90 1.10 -188.2009126604 -188.1173431584 90 1.15 -188.1992989026 -188.1147044065 90 1.20 -188.1956064229 -188.1099215130 90 1.25 -188.1905094724 -188.1039297113 90 1.30 -188.1847836373 -188.0976492032 90 1.35 -188.1787634542 -188.0906567257 90 1.40 -188.1724264907 -188.0832732115 90 1.45 -188.1659299379 -188.0757178569 90 1.50 -188.1594123325 -188.0681556854 90 1.55 -188.1458496111 -188.1234717482 90 1.60 -188.1424178287 -188.1223132544 90 1.65 -188.1384849755 -188.1221421795 90 1.70 -188.1343179889 -188.1224965523 90 1.75 -188.1300897274 -188.1231025675 90 1.80 -188.1258995372 -188.1238122713 90 1.85 -188.1245444083 -188.1218090783 90 1.90 -188.1252514840 -188.1178619652 90 1.95 -188.1259191266 -188.1140765395 90 2.00 -188.1265393605 -188.1104679625 90 2.05 -188.1271122211 -188.1070438024 90 2.10 -188.1276404365 -188.1038078147 90 2.15 -188.1281275211 -188.1007611090 90 2.20 -188.1285765433 -188.0979031565 90 2.25 -188.1289903757 -188.0952316033 90 2.30 -188.1293707470 -188.0927434297 90 2.35 -188.1297195039 -188.0904339475 90 2.40 -188.1300376170 -188.0882980526 90 2.45 -188.1303271767 -188.0863284777 90 2.50 -188.1305889449 -188.0845184405 90 2.55 -188.1308241022 -188.0828601031 90 2.60 -188.1310338961 -188.0813451010 90 2.65 -188.1312196781 -188.0799646755 90 2.70 -188.1313828162 -188.0787099209 90 2.75 -188.1315247494 -188.0775718734 90 2.80 -188.1316469345 -188.0765416950 90 2.85 -188.1317509048 -188.0756107219 90 2.90 -188.1318381669 -188.0747706533 90 2.95 -188.1319102373 -188.0740135758 90 3.00 -188.1319686139 -188.0733320290 100 0.75 -188.1202728059 -187.9863445113 100 0.80 -188.1763305819 -188.0419856076 100 0.85 -188.2161205896 -188.0812750106 100 0.90 -188.2435956713 -188.1081577022 100 0.95 -188.2617335603 -188.1256064922 100 1.00 -188.2728029064 -188.1358864347 100 1.05 -188.2785495178 -188.1407422714 100 1.10 -188.2803294806 -188.1415320758 100 1.15 -188.2792056321 -188.1393277513 100 1.20 -188.2760202942 -188.1349990427 100 1.25 -188.2714452937 -188.1293181766 100 1.30 -188.2659990230 -188.1231309386 100 1.35 -188.2602474471 -188.1165563287 100 1.40 -188.2542791597 -188.1096115083 100 1.45 -188.2481741622 -188.1024984541 100 1.50 -188.2420420775 -188.0953740838 100 1.55 -188.2359750418 -188.0883541959 100 1.60 -188.2233575715 -188.1439954492 100 1.65 -188.2201072402 -188.1427924962 100 1.70 -188.2164692887 -188.1423772053 100 1.75 -188.2126458384 -188.1423899705 100 1.80 -188.2087737520 -188.1426106726 100 1.85 -188.2049310937 -188.1429210972 100 1.90 -188.2011678817 -188.1432561343 100 1.95 -188.1975152001 -188.1435838167 100 2.00 -188.1939914120 -188.1438923023 100 2.05 -188.1906084723 -188.1441792127 100 2.10 -188.1873743346 -188.1444464573 100 2.15 -188.1842942309 -188.1446973480 100 2.20 -188.1813717872 -188.1449347003 100 2.25 -188.1786091332 -188.1451604925 100 2.30 -188.1760074461 -188.1453754116 100 2.35 -188.1735666619 -188.1455793814 100 2.40 -188.1712845313 -188.1457728004 100 2.45 -188.1691587167 -188.1459547176 100 2.50 -188.1671853861 -188.1461244992 100 2.55 -188.1653597088 -188.1462815598 100 2.60 -188.1636760024 -188.1464254231 100 2.65 -188.1621281329 -188.1465555136 100 2.70 -188.1607082884 -188.1466725722 100 2.75 -188.1594095907 -188.1467762007 100 2.80 -188.1582241248 -188.1468669953 100 2.85 -188.1571448683 -188.1469447423 100 2.90 -188.1561635352 -188.1470106993 100 2.95 -188.1552728989 -188.1470653453 100 3.00 -188.1544657146 -188.1471095265 110 0.75 -188.1641925299 -187.9895948728 110 0.80 -188.2205702549 -188.0455015853 110 0.85 -188.2606935389 -188.0850831049 110 0.90 -188.2885229152 -188.1122880508 110 0.95 -188.3070430454 -188.1300934390 110 1.00 -188.3185274081 -188.1407699899 110 1.05 -188.3247262071 -188.1460670243 110 1.10 -188.3269972945 -188.1473475861 110 1.15 -188.3264026375 -188.1456877945 110 1.20 -188.3237784372 -188.1419595041 110 1.25 -188.3197825604 -188.1369152665 110 1.30 -188.3149221228 -188.1312429979 110 1.35 -188.3096421413 -188.1251790471 110 1.40 -188.3041226977 -188.1187740318 110 1.45 -188.2984538596 -188.1122002090 110 1.50 -188.2927369087 -188.1056027428 110 1.55 -188.2870576341 -188.0990891227 110 1.60 -188.2717795687 -188.1472693351 110 1.65 -188.2693194805 -188.1448151956 110 1.70 -188.2662749952 -188.1435058404 110 1.75 -188.2629011976 -188.1428526989 110 1.80 -188.2593762827 -188.1425457623 110 1.85 -188.2558049007 -188.1424097388 110 1.90 -188.2522535479 -188.1423445712 110 1.95 -188.2487647072 -188.1422970001 110 2.00 -188.2453610125 -188.1422474515 110 2.05 -188.2420591467 -188.1421901489 110 2.10 -188.2388674089 -188.1421310584 110 2.15 -188.2357931166 -188.1420772784 110 2.20 -188.2328420046 -188.1420354905 110 2.25 -188.2300193460 -188.1420097804 110 2.30 -188.2273298036 -188.1420015574 110 2.35 -188.2247776130 -188.1420096428 110 2.40 -188.2223654567 -188.1420318697 110 2.45 -188.2200938708 -188.1420661760 110 2.50 -188.2179631002 -188.1421091745 110 2.55 -188.2159714643 -188.1421581462 110 2.60 -188.2141170446 -188.1422096351 110 2.65 -188.2123947280 -188.1422626487 110 2.70 -188.2108004950 -188.1423145645 110 2.75 -188.2093289163 -188.1423638220 110 2.80 -188.2079740477 -188.1424091881 110 2.85 -188.2067294905 -188.1424498395 110 2.90 -188.2055887773 -188.1424850987 110 2.95 -188.2045452455 -188.1425146607 110 3.00 -188.2035922742 -188.1425384325 120 0.75 -188.1855291882 -187.9801622330 120 0.80 -188.2422586778 -188.0363755341 120 0.85 -188.2827544313 -188.0763020615 120 0.90 -188.3109837180 -188.1038946956 120 0.95 -188.3299374633 -188.1221354685 120 1.00 -188.3418949630 -188.1333004505 120 1.05 -188.3486103186 -188.1391454044 120 1.10 -188.3514444765 -188.1410390792 120 1.15 -188.3514591011 -188.1400641841 120 1.20 -188.3494859725 -188.1370970178 120 1.25 -188.3461702408 -188.1328768553 120 1.30 -188.3420090310 -188.1279735639 120 1.35 -188.3373712292 -188.1225968177 120 1.40 -188.3324301584 -188.1168773158 120 1.45 -188.3273039658 -188.1109793151 120 1.50 -188.3220976249 -188.1050388343 120 1.55 -188.3168963549 -188.0991553552 120 1.60 -188.3117616284 -188.0934007898 120 1.65 -188.2970845363 -188.1352604340 120 1.70 -188.2947896618 -188.1329179947 120 1.75 -188.2919830439 -188.1315521151 120 1.80 -188.2888883936 -188.1307377490 120 1.85 -188.2856526104 -188.1302111106 120 1.90 -188.2823666667 -188.1298154860 120 1.95 -188.2790885993 -188.1294586332 120 2.00 -188.2758596842 -188.1290854726 120 2.05 -188.2727031851 -188.1286733909 120 2.10 -188.2696338592 -188.1282197680 120 2.15 -188.2666567895 -188.1277412526 120 2.20 -188.2637700156 -188.1272678182 120 2.25 -188.2609700494 -188.1268311768 120 2.30 -188.2582583642 -188.1264520746 120 2.35 -188.2556422190 -188.1261369287 120 2.40 -188.2531313984 -188.1258821124 120 2.45 -188.2507331853 -188.1256812720 120 2.50 -188.2484546852 -188.1255249060 120 2.55 -188.2462984828 -188.1254060281 120 2.60 -188.2442670765 -188.1253164920 120 2.65 -188.2423592736 -188.1252510756 120 2.70 -188.2405750645 -188.1252028847 120 2.75 -188.2389096755 -188.1251695068 120 2.80 -188.2373604695 -188.1251462403 120 2.85 -188.2359227716 -188.1251303944 120 2.90 -188.2345920511 -188.1251191983 120 2.95 -188.2333629653 -188.1251108382 120 3.00 -188.2322299671 -188.1251039137 130 0.75 -188.1604996514 -188.0470870334 130 0.80 -188.2170103071 -188.1070972457 130 0.85 -188.2577608949 -188.1470932635 130 0.90 -188.2862052633 -188.1745478662 130 0.95 -188.3053298962 -188.1924357949 130 1.00 -188.3174108188 -188.2030154592 130 1.05 -188.3241971058 -188.2080159207 130 1.10 -188.3270414181 -188.2087683583 130 1.15 -188.3269950523 -188.2063001114 130 1.20 -188.3248755142 -188.2014069847 130 1.25 -188.3213244148 -188.1947019209 130 1.30 -188.3168498806 -188.1866562207 130 1.35 -188.3119057842 -188.1775945871 130 1.40 -188.3080544335 -188.1667202783 130 1.45 -188.3093401977 -188.1527597572 130 1.50 -188.3084856956 -188.1422292287 130 1.55 -188.3089123796 -188.1321471722 130 1.60 -188.3096728211 -188.1237044703 130 1.65 -188.3095544393 -188.1178484462 130 1.70 -188.3083310259 -188.1142634985 130 1.75 -188.3063076680 -188.1121846037 130 1.80 -188.3040523057 -188.1111785882 130 1.85 -188.3012008829 -188.1106693696 130 1.90 -188.2982116972 -188.1104757126 130 1.95 -188.2951511028 -188.1105089854 130 2.00 -188.2920641368 -188.1107414663 130 2.05 -188.2890035552 -188.1111596395 130 2.10 -188.2860392169 -188.1117267142 130 2.15 -188.2832348133 -188.1123097113 130 2.20 -188.2805667701 -188.1128878564 130 2.25 -188.2768080353 -188.1299317844 130 2.30 -188.2741213257 -188.1342750717 130 2.35 -188.2715156841 -188.1383831613 130 2.40 -188.2689900027 -188.1422579907 130 2.45 -188.2665437077 -188.1459045042 130 2.50 -188.2641761645 -188.1493301178 130 2.55 -188.2618864336 -188.1525440880 130 2.60 -188.2596734406 -188.1555566802 130 2.65 -188.2575359622 -188.1583786922 130 2.70 -188.2554726345 -188.1610210877 130 2.75 -188.2534819505 -188.1634947518 130 2.80 -188.2515622892 -188.1658102970 130 2.85 -188.2497120325 -188.1679778452 130 2.90 -188.2479293712 -188.1700071690 130 2.95 -188.2462126161 -188.1719073592 130 3.00 -188.2445599380 -188.1736870874 140 0.75 -188.1511562442 -188.0447139466 140 0.80 -188.2086864436 -188.1017811853 140 0.85 -188.2499972563 -188.1423512115 140 0.90 -188.2790574210 -188.1703778193 140 0.95 -188.2988570796 -188.1888397662 140 1.00 -188.3116715996 -188.2000041429 140 1.05 -188.3192429325 -188.2056138825 140 1.10 -188.3229116751 -188.2070166252 140 1.15 -188.3237099929 -188.2052605361 140 1.20 -188.3224308084 -188.2011648180 140 1.25 -188.3196810147 -188.1953727905 140 1.30 -188.3159204945 -188.1883949116 140 1.35 -188.3114943328 -188.1806406309 140 1.40 -188.3066578164 -188.1724429930 140 1.45 -188.3015973189 -188.1640756966 140 1.50 -188.2964443835 -188.1557673401 140 1.55 -188.2912941685 -188.1477037459 140 1.60 -188.2862192422 -188.1400295555 140 1.65 -188.2812860917 -188.1328446277 140 1.70 -188.2824524568 -188.1590086362 140 1.75 -188.2791586009 -188.1572994152 140 1.80 -188.2760217977 -188.1559590050 140 1.85 -188.2730381635 -188.1549490956 140 1.90 -188.2702004622 -188.1542321480 140 1.95 -188.2674980412 -188.1537752089 140 2.00 -188.2649187694 -188.1535507640 140 2.05 -188.2624546304 -188.1535337214 140 2.10 -188.2601024129 -188.1537007701 140 2.15 -188.2578612503 -188.1540298495 140 2.20 -188.2557333442 -188.1544981670 140 2.25 -188.2537247121 -188.1550803436 140 2.30 -188.2518447907 -188.1557481925 140 2.35 -188.2500986188 -188.1564782749 140 2.40 -188.2484931988 -188.1572456836 140 2.45 -188.2470320003 -188.1580296284 140 2.50 -188.2457125939 -188.1588158597 140 2.55 -188.2445298982 -188.1595934339 140 2.60 -188.2434775133 -188.1603533399 140 2.65 -188.2425382322 -188.1610979599 140 2.70 -188.2416972100 -188.1618279339 140 2.75 -188.2409449770 -188.1625392275 140 2.80 -188.2402641281 -188.1632365542 140 2.85 -188.2396407092 -188.1639221303 140 2.90 -188.2390618134 -188.1645982045 140 2.95 -188.2385175605 -188.1652651939 140 3.00 -188.2379987930 -188.1659240027 150 0.75 -188.1285174626 -188.0343050434 150 0.80 -188.1865306466 -188.0918018209 150 0.85 -188.2284124793 -188.1328118296 150 0.90 -188.2581332977 -188.1612919455 150 0.95 -188.2786830569 -188.1802249037 150 1.00 -188.2923323544 -188.1918850062 150 1.05 -188.3008169318 -188.1980220637 150 1.10 -188.3054674907 -188.1999926605 150 1.15 -188.3073041713 -188.1988544702 150 1.20 -188.3071079315 -188.1954349357 150 1.25 -188.3054668868 -188.1903912778 150 1.30 -188.3028273998 -188.1842416511 150 1.35 -188.2995202943 -188.1774025289 150 1.40 -188.2957882289 -188.1702102383 150 1.45 -188.2918069385 -188.1629363621 150 1.50 -188.2877027866 -188.1557973523 150 1.55 -188.2835663497 -188.1489606909 150 1.60 -188.2794721164 -188.1425405718 150 1.65 -188.2754816038 -188.1366083542 150 1.70 -188.2716774858 -188.1311736329 150 1.75 -188.2681722646 -188.1261974286 150 1.80 -188.2654318094 -188.1213267617 150 1.85 -188.3033272432 -188.1005275966 150 1.90 -188.3016329162 -188.1054150957 150 1.95 -188.2998130815 -188.1104293707 150 2.00 -188.2979333896 -188.1154142060 150 2.05 -188.2960298985 -188.1202775526 150 2.10 -188.2941285950 -188.1249600622 150 2.15 -188.2922439165 -188.1294291314 150 2.20 -188.2903866000 -188.1336662638 150 2.25 -188.2885640708 -188.1376634032 150 2.30 -188.2867816022 -188.1414195085 150 2.35 -188.2850427690 -188.1449385085 150 2.40 -188.2833503526 -188.1482272681 150 2.45 -188.2817059558 -188.1512951551 150 2.50 -188.2801108174 -188.1541526321 150 2.55 -188.2785656234 -188.1568110035 150 2.60 -188.2770706557 -188.1592819404 150 2.65 -188.2756260391 -188.1615769916 150 2.70 -188.2742315784 -188.1637075752 150 2.75 -188.2728869261 -188.1656846858 150 2.80 -188.2715915889 -188.1675188143 150 2.85 -188.2703448449 -188.1692199941 150 2.90 -188.2691460401 -188.1707974844 150 2.95 -188.2679943287 -188.1722600445 150 3.00 -188.2668887879 -188.1736158390 170 0.75 -188.0476590242 -187.9885873174 170 0.80 -188.1067544994 -188.0465603337 170 0.85 -188.1501016070 -188.0881112947 170 0.90 -188.1816429496 -188.1172227523 170 0.95 -188.2043334847 -188.1369057954 170 1.00 -188.2204068223 -188.1494619594 170 1.05 -188.2315448183 -188.1566823367 170 1.10 -188.2390506996 -188.1599352609 170 1.15 -188.2438924552 -188.1603109764 170 1.20 -188.2468142558 -188.1586498764 170 1.25 -188.2483711971 -188.1556134511 170 1.30 -188.2489755027 -188.1517194055 170 1.35 -188.2489291064 -188.1473716959 170 1.40 -188.2484495605 -188.1428824025 170 1.45 -188.2476919113 -188.1384860028 170 1.50 -188.2467669529 -188.1343487047 170 1.55 -188.2457532912 -188.1305782460 170 1.60 -188.2447088683 -188.1272308504 170 1.65 -188.2436793683 -188.1243193560 170 1.70 -188.2426997413 -188.1218266252 170 1.75 -188.2418198705 -188.1196943271 170 1.80 -188.2411431654 -188.1177998255 170 1.85 -188.2780020991 -188.0956617124 170 1.90 -188.2788644426 -188.0974991406 170 1.95 -188.2794311717 -188.0996501617 170 2.00 -188.2797606636 -188.1019868714 170 2.05 -188.2799083776 -188.1044038101 170 2.10 -188.2799153507 -188.1068265957 170 2.15 -188.2798121854 -188.1092042856 170 2.20 -188.2796218561 -188.1115034332 170 2.25 -188.2793627830 -188.1137022807 170 2.30 -188.2790477348 -188.1157897740 170 2.35 -188.2786879500 -188.1177598026 170 2.40 -188.2782929706 -188.1196101828 170 2.45 -188.2778679566 -188.1213444865 170 2.50 -188.2774194800 -188.1229656036 170 2.55 -188.2769523394 -188.1244785051 170 2.60 -188.2764718933 -188.1258875970 170 2.65 -188.2759789553 -188.1272016307 170 2.70 -188.2754778321 -188.1284255073 170 2.75 -188.2749711671 -188.1295653588 170 2.80 -188.2744615361 -188.1306268954 170 2.85 -188.2739509518 -188.1316158762 170 2.90 -188.2734430724 -188.1325358760 170 2.95 -188.2729362490 -188.1333952543 170 3.00 -188.2724335635 -188.1341971193 190 0.75 -187.9349407041 -187.9049991438 190 0.80 -187.9963004052 -187.9600178760 190 0.85 -188.0422027439 -187.9993225884 190 0.90 -188.0765894171 -188.0269522975 190 0.95 -188.1024716743 -188.0459407658 190 1.00 -188.1222012013 -188.0586017954 190 1.05 -188.1378122608 -188.0666713573 190 1.10 -188.1525488763 -188.0715816898 190 1.15 -188.1635819676 -188.0786822516 190 1.20 -188.1726065738 -188.0855182466 190 1.25 -188.1804218618 -188.0918102088 190 1.30 -188.1874311952 -188.0975794728 190 1.35 -188.1939217350 -188.1027972590 190 1.40 -188.1999868439 -188.1075201557 190 1.45 -188.2057147235 -188.1117512372 190 1.50 -188.2111296906 -188.1155271830 190 1.55 -188.2162385282 -188.1188866436 190 1.60 -188.2210331267 -188.1218753486 190 1.65 -188.2255140905 -188.1245266065 190 1.70 -188.2296791203 -188.1268751597 190 1.75 -188.2335208749 -188.1289604803 190 1.80 -188.2370445753 -188.1308096798 190 1.85 -188.2402561032 -188.1324496689 190 1.90 -188.2431649765 -188.1339041817 190 1.95 -188.2457838916 -188.1351940934 190 2.00 -188.2481280355 -188.1363378460 190 2.05 -188.2502144628 -188.1373517389 190 2.10 -188.2520617947 -188.1382498534 190 2.15 -188.2536874651 -188.1390464308 190 2.20 -188.2551112578 -188.1397519986 190 2.25 -188.2563509019 -188.1403774836 190 2.30 -188.2574237585 -188.1409323366 190 2.35 -188.2583462499 -188.1414249655 190 2.40 -188.2591336858 -188.1418628481 190 2.45 -188.2598006700 -188.1422521392 190 2.50 -188.2603594469 -188.1425993956 190 2.55 -188.2608221635 -188.1429093994 190 2.60 -188.2612001868 -188.1431859732 190 2.65 -188.2615027992 -188.1434334339 190 2.70 -188.2617390687 -188.1436548654 190 2.75 -188.2619170705 -188.1438530591 190 2.80 -188.2620440719 -188.1440304658 190 2.85 -188.2621266496 -188.1441892056 190 2.90 -188.2621705266 -188.1443313573 190 2.95 -188.2621809693 -188.1444586346 190 3.00 -188.2621627843 -188.1445725082 200 0.75 -187.8922526924 -187.8477450345 200 0.80 -187.9531144034 -187.9020684311 200 0.85 -188.0004855149 -187.9530803819 200 0.90 -188.0333150462 -187.9928302710 200 0.95 -188.0572893280 -188.0225049473 200 1.00 -188.0746438987 -188.0436432931 200 1.05 -188.0872585533 -188.0577478708 200 1.10 -188.1031741381 -188.0668500693 200 1.15 -188.1178518191 -188.0731687925 200 1.20 -188.1312002902 -188.0786833670 200 1.25 -188.1432181172 -188.0842660162 200 1.30 -188.1541740341 -188.0899201317 200 1.35 -188.1642920559 -188.0954974982 200 1.40 -188.1736906597 -188.1008943317 200 1.45 -188.1824249254 -188.1060520919 200 1.50 -188.1905181638 -188.1109432549 200 1.55 -188.1979816911 -188.1155587163 200 1.60 -188.2048308586 -188.1198940691 200 1.65 -188.2110810824 -188.1239537401 200 1.70 -188.2167502318 -188.1277476265 200 1.75 -188.2218672499 -188.1312810811 200 1.80 -188.2264618047 -188.1345638261 200 1.85 -188.2305662623 -188.1376065810 200 1.90 -188.2342148706 -188.1404206128 200 1.95 -188.2374426794 -188.1430176890 200 2.00 -188.2402848246 -188.1454098003 200 2.05 -188.2427756794 -188.1476091796 200 2.10 -188.2449484003 -188.1496280544 200 2.15 -188.2468352031 -188.1514778209 200 2.20 -188.2484640221 -188.1531720039 200 2.25 -188.2498629215 -188.1547215389 200 2.30 -188.2510571154 -188.1561376131 200 2.35 -188.2520695758 -188.1574309918 200 2.40 -188.2529212027 -188.1586118522 200 2.45 -188.2536312018 -188.1596894551 200 2.50 -188.2542161383 -188.1606732032 200 2.55 -188.2546915889 -188.1615710983 200 2.60 -188.2550714001 -188.1623906276 200 2.65 -188.2553678815 -188.1631387191 200 2.70 -188.2555920923 -188.1638216086 200 2.75 -188.2557538615 -188.1644449889 200 2.80 -188.2558618032 -188.1650141335 200 2.85 -188.2559238140 -188.1655335603 200 2.90 -188.2559466235 -188.1660076341 200 2.95 -188.2559362016 -188.1664402790 200 3.00 -188.2558978269 -188.1668350544
And here’s the actual plot:
plot
09 Wednesday Jan 2013
Posted in sed
Let’s take an plain text file, input.txt, that looks like this
PATTERN-1 First line of unimportant text Second line of unimportant text PATTERN-2 Some more texts (may/ mayn't be important!)
We want to delete some of the lines from the file using the command line stream editor, sed.
1. Use the following command to delete the lines lying between PATTERN-1 and PATTERN-2 , excluding the lines containing these patterns:
sed '/PATTERN-1/,/PATTERN-2/{//!d}' input.txt
If you want to modify the file itself, instead of just the file stream, include the “-i” flag after sed.
2. Use the following command to delete the lines lying between PATTERN-1 and PATTERN-2 , including the lines containing these patterns:
sed '/PATTERN-1/,/PATTERN-2/d' input.txt
3. To delete all the lines after PATTERN-2, use this
sed '/PATTERN-1/,$d' input.txt
4. To delete lines, say 2 through 4 (if you know the correct line numbers, of course!), use this
sed '2,4d' input.txt
Here is a good sed reference.
*NIX Tricks 