Re: Simple list question
- To: mathgroup at smc.vnet.net
 - Subject: [mg132594] Re: Simple list question
 - From: Alexei Boulbitch <Alexei.Boulbitch at iee.lu>
 - Date: Wed, 16 Apr 2014 03:39:26 -0400 (EDT)
 - Delivered-to: l-mathgroup@mail-archive0.wolfram.com
 - Delivered-to: l-mathgroup@wolfram.com
 - Delivered-to: mathgroup-outx@smc.vnet.net
 - Delivered-to: mathgroup-newsendx@smc.vnet.net
 
pcin = 2;
pcex = 3;   (*pcin and pcex can have various small values *)
coin = Table[{10 RandomReal[], 10 RandomReal[]}, {pcin}]
coex = Table[{3 RandomReal[], 3 RandomReal[]}, {pcex}]
cobo = Append[coin, coex]
gives, typically,
{{0.288346, 3.57763}, {1.7335, 8.69666}}
{{0.179831, 1.35324}, {0.927483, 0.931586}, {1.76338, 2.45073}}
{{0.288346, 3.57763}, {1.7335,
   8.69666}, {{0.179831, 1.35324}, {0.927483, 0.931586}, {1.76338,
    2.45073}}}
What I want is a series of x,y coordinates with no extra nesting:
{{0.288346, 3.57763}, {1.7335,
   8.69666}, {0.179831, 1.35324}, {0.927483, 0.931586}, {1.76338,
    2.45073}}
I'm embarrassed to admit that I can't find how to do this.
Please email me. Thank you.
Hi, you need Join instead of Append:
pcin = 2;
pcex = 3;(*pcin and pcex can have various small values*)coin =
 Table[{10 RandomReal[], 10 RandomReal[]}, {pcin}];
coex = Table[{3 RandomReal[], 3 RandomReal[]}, {pcex}];
cobo = Join[coin, coex]
{{5.32716, 5.67691}, {0.325954, 1.69115}, {1.9243, 1.15678}, {1.23113,
   1.97135}, {0.844278, 2.93468}}
Have fun, Alexei
Alexei BOULBITCH, Dr., habil.
IEE S.A.
ZAE Weiergewan,
11, rue Edmond Reuter,
L-5326 Contern, LUXEMBOURG
Office phone :  +352-2454-2566
Office fax:       +352-2454-3566
mobile phone:  +49 151 52 40 66 44
e-mail: alexei.boulbitch at iee.lu