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POHow do you Parse this String in Lua "1 2 3 4"?
 

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  1. POHow do you Parse this String in Lua "1 2 3 4"?
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    <p>I am brand new to Lua from a pure VB.Net background. I have a large file of maplines that I need to iterate through. The data is in the form of:</p> <p>;XX.XXX YY.YYY Name ; [Airways] 58.50 -12.44 58.21 -13.73</p> <p>58.21 -13.73 57.89 -15.02</p> <p>57.89 -15.02 57.54 -16.30</p> <p>57.54 -16.30 57.17 -17.58</p> <p>57.17 -17.58 56.76 -18.84</p> <p>56.76 -18.84 56.33 -20.10</p> <p>56.33 -20.10 55.87 -21.35</p> <p>54.33 -25.02 53.77 -26.22</p> <p>I have tried this but keep getting an error.</p> <pre><code>local mapLines = {} local filePath = system.pathForFile( "data.ini", system.DocumentsDirectory ) local file = io.open( filePath, "r" ) if file then local contents = file:read( "*a" ) --print( "Contents of " .. filePath ) --print( contents ) io.close( file ) local t = display.newText( "Contents of ", 5, 80, nil, 16 ); t:setTextColor( 255, 255, 136, 255 ); local t = display.newText( filePath, 5, 100, nil, 10 ); t:setTextColor( 255, 255, 136, 255 ); local ylast = 130 for line in io.lines(filePath) do local t = display.newText( line, 15, ylast, nil, 14 ); t:setTextColor( 255, 255, 255 ); ylast = ylast + 20 n = tonumber(line); if n == nil then local f = {} s = "1 2 3 4" for k, v in string.gmatch(s, "(%w+) (%w+)") do f[k] = v end local myLine = newLine(tonumber(f[1]), tonumber(f[2]), tonumber(f[3]), tonumber(f[4])) table.insert( mapLines, myLine ) end end end -- Example of shape drawing func local function newLine(x,y,x1,y1) -- need initial segment to start local Line = display.newLine( x, y, x1, y1 ) Line:setColor( 30, 155, 30, 100 ) Line.width = 3 return Line end Runtime:addEventListener( "enterFrame", mapLines ) </code></pre> <p>Any help would be greatly appreciated!</p> <p>Dave</p>
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      1. POHow do you Parse this String in Lua "1 2 3 4"?
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      1. POHow do you Parse this String in Lua "1 2 3 4"?
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    1. COPlease fix formatting. Please state the details about the error you get or produce a minimal example, which works in Lua console. Your code is clearly for some Lua-scriptable framework.
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    2. COI've substantially reformatted the code. A key thing I did was replace all tabs with spaces, as tab characters are misunderstood by the markdown engine. I also condensed out most of the blank lines. Please feel free to put some back if I've been too hard on it.
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