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

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