gnuplot的 - 跳过前两行
问题描述：
比方说，我有一个.csv文件看起来像这样：gnuplot的 - 跳过前两行
<empty> <empty> 8 <empty> <empty> <empty> 16 <empty> ...
<empty> X A B C D A B ...
<inval> <x1> <y8A1> <y8B1> <y8C1> <y8D1> <y16A1> <y16B1> ...
<inval> <x2> <y8A2> <y8B2> <y8C2> <y8D2> <y16A2> <y16B2> ...
... ... ... ... ... ... ... ...
如：
,,8,,,,16,,,,32,,,,48,,,,64,,,
,"clients","Tput – avg","Tput-std","Rtime-avg","Rtime-std","Tput – avg","Tput-std","Rtime-avg","Rtime-std","Tput – avg","Tput-std","Rtime-avg","Rtime-std","Tput – avg","Tput-std","Rtime-avg","Rtime-std","Tput – avg","Tput-std","Rtime-avg","Rtime-std"
10,50,9039.0819672131,433.6998870707,5887.1590163935,6804.7096885246,10801.1065573771,484.5072480861,4935.1245901639,4391.0008360656,10280.6721311475,495.4616072373,5171.7918032787,5172.7538688525,10142.2131147541,599.0469547239,5312.6901639344,6127.9184590164,9556.3524590164,600.6814146608,5730.8081967213,7182.2055245902
30,150,8809.0163934426,460.0830843491,17358.5344262295,25936.6244098361,14158.1229508197,718.1770594822,10958.9131147541,10945.2590163934,14780.737704918,835.4988255869,10563.8032786885,7641.2886065574,15027.8196721311,850.0582701307,10332.4655737705,7341.2337868853,14616.6885245902,866.1246635524,10659.8770491803,8198.0366229508
50,250,9353.9672131148,432.8189015728,27318.1,45790.2556229508,13702.3852459016,707.6747849944,18785.6590163934,23324.8483770492,15943.6557377049,677.4546640345,16035.2606557377,10461.7719180328,15860.1721311475,830.4099751453,16213.0213114754,10124.9612131148,15326.0163934426,1031.17034143,16795.6081967213,10698.6249508197
70,350,8881.5573770492,726.9289548887,40686.8491803279,72405.878295082,13387.4426229508,445.5236398053,26757.5327868852,32890.1623606557,16645.6885245902,626.5893434468,21494.2508196721,13007.9780327869,16789.1393442623,808.3621538696,21347.3950819672,13930.1256229508,16718.9836065574,668.181132478,21345.6196721311,12401.9711311475
90,450,8746.4180327869,500.6200091656,52822.9016393443,93682.0274754098,13743.131147541,455.9099951486,33312.6508196721,46968.4851967213,16682.4098360656,904.7721063143,27619.7491803279,17528.359704918,17071,1066.3633936871,27044.6049180328,19224.9943606557,17149.5573770492,1053.7513907702,27140.168852459,17220.9472786885
110,550,9005.2131147541,383.9937579276,61994.106557377,106751.630967213,13514.262295082,746.2179005263,42984.4983606558,64147.0733934426,16509.6803278689,650.1557055149,33979.7934426229,20348.3276557377,17636.5081967213,936.1630106332,32117.306557377,23076.5144590164,14541.9180327869,2804.2695750414,40039.3770491803,29381.2578032787
130,650,9031.3606557377,362.571900032,73081.3918032787,134146.073196721,13212.8196721311,697.9028011167,51024.2737704918,77957.3243770492,16202.8524590164,656.0559899678,40900.4983606557,27040.2254098361,18062.5573770492,1279.5387003432,37238.6868852459,25002.5473278688,17503.2786885246,1440.2490022181,38796.3524590164,29969.6093278688
比方说，我希望有一个（X，A）-plot（最后是一条8，一条16，一条32，......）。
如何跳过前两行来获取实际数据？ 我试图
plot filename.".csv" u 2:3 every ::3 lc rgb "#00E80000" title "8"
但仍然给我
"plot_this.p", line 16: warning: Skipping data file with no valid points
plot filename.".csv" u 2:3 every ::3 lc rgb "#00E80000" title "8"
^
"plot_this.p", line 16: x range is invalid
答
gnuplot的默认使用空格作为文件分隔符的数据列。 想要绘制CSV（逗号分隔）的数据文件与您需要运行的gnuplot之前：
set datafile separator ','
这样做之后，你的第一个绘图命令的伟大工程。 Gnuplot在处理CSV列标题时非常智能。
适合我。你记得： set datafile separator'，'？ – Halzephron
@Halzephron确实是这个问题。非常感谢。想从中得出答案吗？ – User1291
这是个好消息。谢谢，我刚刚发布了一个答案。 – Halzephron