I want to make such plot using the following data set plot Mean with Sd(+/-) by Dim group by Lac
here is data Does anyone know how to plot using xyploy Thanks, Aimin Mean Sd Var Min Max Dim Lac 704 44.00000 NA NA 44.0 44.0 -30 3 703 45.92000 9.5484030 91.1720000 60.0 34.4 -30 4 702 57.40000 NA NA 57.4 57.4 -30 5 707 49.00000 NA NA 49.0 49.0 -29 3 706 43.12000 16.5762481 274.7720000 61.0 16.8 -29 4 705 60.40000 NA NA 60.4 60.4 -29 5 710 32.65000 21.2987480 453.6366667 52.0 8.4 -28 3 709 36.30000 13.2717746 176.1400000 51.2 22.2 -28 4 708 39.60000 NA NA 39.6 39.6 -28 6 713 43.84000 16.3226223 266.4280000 57.4 15.8 -27 3 712 39.46667 10.7930842 116.4906667 50.2 24.8 -27 4 711 23.40000 NA NA 23.4 23.4 -27 6 717 36.86667 16.5373113 273.4826667 52.0 11.0 -26 3 716 51.77143 21.5293377 463.5123810 93.0 20.2 -26 4 715 56.20000 NA NA 56.2 56.2 -26 5 714 38.00000 NA NA 38.0 38.0 -26 6 628 33.33333 22.0927741 488.0906667 60.6 0.6 -25 3 627 46.20000 11.9002521 141.6160000 55.0 22.8 -25 4 626 45.00000 16.1220346 259.9200000 56.4 33.6 -25 5 738 36.76000 16.8014285 282.2880000 49.8 9.4 -24 3 737 45.05000 17.6313168 310.8633333 61.2 21.6 -24 4 736 53.70000 2.1213203 4.5000000 55.2 52.2 -24 5 122 38.14286 17.1455395 293.9695238 58.0 8.0 -23 3 121 49.36667 18.7456306 351.3986667 69.2 15.6 -23 4 120 50.25000 9.2885234 86.2766667 58.8 37.8 -23 5 119 80.00000 NA NA 80.0 80.0 -23 6 126 47.37778 5.8072751 33.7244444 55.2 37.8 -22 3 125 59.10000 18.5004865 342.2680000 87.6 40.8 -22 4 124 57.44000 24.3065423 590.8080000 99.0 38.6 -22 5 123 30.40000 NA NA 30.4 30.4 -22 7 129 50.00000 13.8258557 191.1542857 78.0 30.0 -21 3 128 40.92000 20.8502278 434.7320000 62.8 7.0 -21 4 127 49.80000 1.0392305 1.0800000 50.4 48.6 -21 5 721 52.20000 6.2369865 38.9000000 61.2 43.2 -20 3 720 49.36000 6.7740682 45.8880000 56.8 42.2 -20 4 [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.