Re: To put name to columns

*To*: mathgroup at smc.vnet.net*Subject*: [mg116455] Re: To put name to columns*From*: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>*Date*: Wed, 16 Feb 2011 04:34:03 -0500 (EST)*References*: <ijdocr$fe1$1@smc.vnet.net>

Labeling can be done like the following example fron the "Applications" section of the Grid doc page: data = {{"first", 1, 2, 3}, {"second", 11, 5, 6}, {"third", 111, 8, 9}, {"fourth", 1111, 10, 11}}; Text@Grid[Prepend[data, {"name", "a", "b", "c"}], Background -> {None, {Lighter[Yellow, .9], {White, Lighter[Blend[{Blue, Green}], .8]}}}, Dividers -> {{Darker[Gray, .6], {Lighter[Gray, .5]}, Darker[Gray, .6]}, {Darker[Gray, .6], Darker[Gray, .6], {False}, Darker[Gray, .6]}}, Alignment -> {{Left, Right, {Left}}}, ItemSize -> {{10, 3, 5, 5}}, Frame -> Darker[Gray, .6], ItemStyle -> 14, Spacings -> {Automatic, .8}] You see that Prepend is used to insert names in the grid. TableForm has an option TableHeadings that can be used for this as well. Assigning a symbolic name to each column can be done thus: {name,a,b,c}=Transpose[data] In[4]:= Mean[b] Out[4]= 25/4 In[5]:= Sort[name] Out[5]= {"first", "fourth", "second", "third"} Cheers -- Sjoerd On Feb 15, 12:34 pm, "Carlos J. Andr=E9s Blasco" <cjand... at ono.com> wrote: > Please, how to put name to each column in a table with several columns, when you insert a grid? > The idea is to manipulate these columns by means of their names, for example to find out the average, standard devaition, etc > Thank you > Carlos J,. Andres