RE: Text Wrapping

*To*: mathgroup at smc.vnet.net*Subject*: [mg32105] RE: [mg32099] Text Wrapping*From*: "David Park" <djmp at earthlink.net>*Date*: Mon, 24 Dec 2001 23:44:37 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

Brian, If you have a huge data base it will never fit of one screen so you will need a convenient method to display selected portions of it. Here is what I came up with. I assume that the data contains only the single sequence since we can generate the paired sequence. This generates the four nucleotides randomly. randomnucl := Switch[Random[], _?(# < 0.25 &), a, _?(# < 0.50 &), t, _?(# < 0.75 &), c, _, g] This generates a sample DNA sequence. data = Table[randomnucl, {1000}]; This generates the matching base pair. For our display short rows will be padded with blanks. basepair[n_] := Switch[n, a, t, t, a, c, g, g, c, _, " "] This routine will display a segment of the data. DisplaySequence::usage = "DisplaySequence[start, rowlength, n][data] will display the DNA sequence \ in paired format starting at position start in n rowlength rows. data must be \ a sequence of the symbols a, t, g and c. "; DisplaySequence[start_, rowlength_, rows_][data_] := Module[{subdata, rowgrid}, rowgrid[subdata_] := GridBox[{ToBoxes /@ subdata, Table["|", {rowlength}], ToBoxes /@ basepair /@ subdata}, GridBaseline -> Bottom]; subdata = Take[data, {start, Min[start + rows rowlength - 1, Length[data]]}]; subdata = Partition[subdata, rowlength, rowlength, {1, 1}, " "]; subdata = {rowgrid[#]} & /@ subdata; DisplayForm[FrameBox[GridBox[subdata, RowLines -> True]]] ] Here is a sample display. data // DisplaySequence[905, 25, 5] David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ > From: Brian Higgins [mailto:bghiggins at ucdavis.edu] To: mathgroup at smc.vnet.net > > I am interested in using GridBoxes to generate some output that will > wrap in the notebook window. Here is a simple example using numbers > > CellPrint[Cell[BoxData[GridBox[Table[Random[], {2}, {10}]]], > "Output"]] > > The output is a "table" consisting of two rows and 10 columns. > Obviously you can scroll to see all the entries, but I would like the > output to wrap in the browser window because in my application(see > below) the number of columns will be large(>1000). Is there some > option I can specify for GridBoxes, Cell? > > In my application the actual grid structure I want to generate is a > DNA sequence of paired bases that can be graphically represented as > follows > > CellPrint[ > Cell[RowBox[{GridBox[{Characters["atcgt"], Table["|", {5}], > Characters["tagca"]}, GridBaseline -> Bottom]}], > "Output"]] > > > Any thoughts how this can be done? > > > Brian >