graph problem: Not all vars are showing up

[Jade Li]

Dear Stata Users,

I am having a problem with twoway line:

this is the data I am using:

* Example generated by -dataex-. To install: ssc install dataex
clear
input int year float(var_1 var_2 var_3 var_4 var_5 var_6 var_7 var_8 var_9 var_10 var_11 var_12 var_13 var_14 var_15 var_16 var_17 var_18 var_19 var_20)
2000   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607   1.23607
2001 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868 1.2853868
2002  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201  1.332201
2003 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934 1.2078934
2004  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133  1.297133
2005 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374 1.3236374
2006 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487 1.3439487
2007 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246 1.4576246
2008 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578 1.4049578
2009 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476 1.2910476
2010 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848 1.3710848
2011 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198 1.3456198
2012 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556 1.4157556
2013  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696  1.529696
2014 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847 1.7484847
2015  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621  1.729621
2016 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744 1.7126744
2017  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705  1.935705
end

this is the code:

preserve
graph twoway  ///
(line  var_1    var_2    var_3    var_4    var_5    var_6    var_7    var_8    var_9    var_10    var_11    var_12    var_13    var_14    var_15    var_16    var_17    var_18    var_19    var_20 year),  legend (off) xtitle("") xlabel(2000(2)2017) ytitle("") yscale(r(0.90(.20)2.5)) ylabel(0.90(.20)2.5) ///
graphregion(color(white)) saving("$Uni_pc\var1_20.png", replace)
graph export "$Uni_pc\var1_20.png", as(png) replace
restore

This is what I get:

I do not know why the other vars are not shown on the figure!

Thanks for helping
Best
JLi

[Rich Goldstein]

at least in your data example, all the variables named "var_#" are exactly the same - so graph is just exactly overlaying all lines and it looks as though there is only 1 line

[Jade Li]

Thanks My bad!