<html><head></head><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:16px"><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7545"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7546">Dear All, </font></div><div dir="ltr" style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7547"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7548">How can I extract u & v wind magnitude as time series using Grads. I try this code, as I set prnopts error come out as "missing or Invalid Arguments for prnopts option". I am not familiar with </font><span style="font-size: medium;" id="yui_3_16_0_ym19_1_1500520088188_7549">prnopts, </span><span style="font-size: medium;" id="yui_3_16_0_ym19_1_1500520088188_7550">What should I add? I'm using windows 7. Please guide me. Thank you.</span></div><div dir="ltr" style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7551"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7552">set lat 6 </font></div><div dir="ltr" style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7553"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7554">set lon 120</font></div><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7555"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7556">set t 1 92</font></div><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7557"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7558">set gxout print</font></div><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7559"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7560">set prnopts %6.2 f 1 1</font></div><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7561"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7562">d mag(u,v)</font></div><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7563"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7564">a= sublin(result,2) </font></div><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7565"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7566">b= subwrd(a,1)</font></div><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7567"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7568">res=write('data.txt',time' 'b,append)</font></div><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7569"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7570"><br id="yui_3_16_0_ym19_1_1500520088188_7571"></font></div><div style="color: rgb(17, 17, 17); font-family: Roboto, Arial, sans-serif; margin-bottom: 10px;" id="yui_3_16_0_ym19_1_1500520088188_7572"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7573">-Siti</font></div><div dir="ltr" id="yui_3_16_0_ym19_1_1500520088188_7574"><font size="3" id="yui_3_16_0_ym19_1_1500520088188_7575"><br id="yui_3_16_0_ym19_1_1500520088188_7576"></font></div></div></body></html>