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<p class="MsoNormal">Lucky<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You can index an element within an array that is part of a list in exactly the same way that you can index a standalone array – just think of lista[2] as the array ‘c’. In your example:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">>print( c(1) ) ;returns “two”<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">>print( lista[2](1) ) ;also returns “two” <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">ncl-talk <ncl-talk-bounces@ucar.edu> on behalf of
</span><span lang="EN-US" style="font-size:12.0pt;font-family:"MS Gothic";color:black">半个丑角</span><span style="font-size:12.0pt;color:black"> <644457443@qq.com><br>
<b>Date: </b>Thursday, 7 March 2019 at 2:10 PM<br>
<b>To: </b>ncl-talk <ncl-talk@ucar.edu><br>
<b>Subject: </b>[ncl-talk] Some operation questions about list in NCL<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Dear NCL team or users,<o:p></o:p></p>
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<p class="MsoNormal"> Hello, every body! It's kind for you all to read my letter! <o:p></o:p></p>
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<p class="MsoNormal"> It was known that NCL have a data struction called list, into which we can store different types of data together. But I got confused about its operation to get an exact data from a list. To make my question more clearly, set the
following codes as an example:<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">> begin<o:p></o:p></p>
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<p class="MsoNormal">> a = (/1,2,3/)<o:p></o:p></p>
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<p class="MsoNormal">> b = (/3,4,5,6,7/)<o:p></o:p></p>
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<p class="MsoNormal">> c = (/"one","two"/)<o:p></o:p></p>
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<div>
<p class="MsoNormal">> lista = [/a,b,c/]<o:p></o:p></p>
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<p class="MsoNormal">> print(lista[2])<o:p></o:p></p>
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<p class="MsoNormal">> end <o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">As a result, in the screen, it will be:<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">> Variable: c<br>
> Type: string<br>
> Total Size: 8 bytes<br>
> 2 values<br>
> Number of Dimensions: 1<br>
> Dimensions and sizes: [2]<br>
> Coordinates:<br>
> (0) one<br>
> (1) two<o:p></o:p></p>
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<p class="MsoNormal"> My question is that, list[2] will get the third array in the list, but how can I get the elements in the third array one by one? how can I index "two" in my ncl script when I need to read it out?<o:p></o:p></p>
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<p class="MsoNormal"> I feel sorry to disturb you, but I do need a help. Again, thanks for reading my letter!
<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal">Cheers,<o:p></o:p></p>
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<p class="MsoNormal">Lucky<o:p></o:p></p>
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