User talk:Koko90

Tip: Categorizing images

---

Hello, Koko90!

Tip: Add categories to your files

Thanks a lot for contributing to the Wikimedia Commons! Here's a tip to make your uploads more useful: Why not add some categories to describe them? This will help more people to find and use them.

Here's how:

1) If you're using the UploadWizard, you can add categories to each file when you describe it. Just click "more options" for the file and add the categories which make sense:

2) You can also pick the file from your list of uploads, edit the file description page, and manually add the category code at the end of the page.

[[Category:Category name]]

For example, if you are uploading a diagram showing the orbits of comets, you add the following code:

[[Category:Astronomical diagrams]]

[[Category:Comets]]

This will make the diagram show up in the categories "Astronomical diagrams" and "Comets".

When picking categories, try to choose a specific category ("Astronomical diagrams") over a generic one ("Illustrations").

Thanks again for your uploads! More information about categorization can be found in Commons:Categories, and don't hesitate to leave a note on the help desk.

BotMultichillT 06:05, 1 July 2009 (UTC)

• Image:Desargues graph 2COL.svg is uncategorized since 30 June 2009.
• Image:Photo fourme entière Salers avec morceaux coupés à droite (1).jpg was uncategorized on 21 October 2009.

Desargues graph 3color edge.svg

Hi koko90.

I like your illustration of an edge coloring on Desargues graph. However, I do wonder if it might be preferable to color the vertices with a neutral color (say black), since red is one of the colors used in the edge coloring, which makes it appear as if the fact the the vertices are also red has some mathematical significance. --75.170.142.26 17:10, 3 July 2009 (UTC)

I have fixed it, thanks for the idea. Koko90 (talk) 11:07, 19 August 2009 (UTC)

A beginner’s problem with Graphviz

Hello koko90, i just discovered your page – very great graphs, congratulations! And according to the file metadata, you created them with Graphviz, didn’t you? I’m new with Graphviz and tried to create a SVG version of File:Foster_graph_hamiltonian.png – here’s the DOT file:

graph {
"0";"1";"2";"3";"4";"5";"6";"7";"8";"9";"10";"11";"12";"13";"14";"15";"16";"17";"18";"19";"20";
"21";"22";"23";"24";"25";"26";"27";"28";"29";"30";"31";"32";"33";"34";"35";"36";"37";"38";"39";"40";
"41";"42";"43";"44";"45";"46";"47";"48";"49";"50";"51";"52";"53";"54";"55";"56";"57";"58";"59";"60";
"61";"62";"63";"64";"65";"66";"67";"68";"69";"70";"71";"72";"73";"74";"75";"76";"77";"78";"79";"80";
"81";"82";"83";"84";"85";"86";"87";"88";"89";
"0"--"1";"0"--"89";"0"--"17";"1"--"2";"1"--"82";"2"--"3";"2"--"39";"3"--"56";"3"--"4";"4"--"5";"4"--"13";
"5"--"6";"5"--"78";"6"--"7";"6"--"23";"7"--"8";"7"--"88";"8"--"9";"8"--"45";"9"--"10";"9"--"62";"10"--"11";
"10"--"19";"11"--"12";"11"--"84";"12"--"13";"12"--"29";"13"--"14";"14"--"51";"14"--"15";"15"--"16";
"15"--"68";"16"--"17";"16"--"25";"17"--"18";"18"--"19";"18"--"35";"19"--"20";"20"--"57";"20"--"21";
"21"--"74";"21"--"22";"22"--"23";"22"--"31";"23"--"24";"24"--"25";"24"--"41";"25"--"26";"26"--"27";
"26"--"63";"27"--"80";"27"--"28";"28"--"29";"28"--"37";"29"--"30";"30"--"31";"30"--"47";"31"--"32";
"32"--"33";"32"--"69";"33"--"34";"33"--"86";"34"--"35";"34"--"43";"35"--"36";"36"--"37";"36"--"53";
"37"--"38";"38"--"75";"38"--"39";"39"--"40";"40"--"41";"40"--"49";"41"--"42";"42"--"43";"42"--"59";
"43"--"44";"44"--"81";"44"--"45";"45"--"46";"46"--"47";"46"--"55";"47"--"48";"48"--"49";"48"--"65";
"49"--"50";"50"--"51";"50"--"87";"51"--"52";"52"--"53";"52"--"61";"53"--"54";"54"--"55";"54"--"71";
"55"--"56";"56"--"57";"57"--"58";"58"--"67";"58"--"59";"59"--"60";"60"--"61";"60"--"77";"61"--"62";
"62"--"63";"63"--"64";"64"--"65";"64"--"73";"65"--"66";"66"--"67";"66"--"83";"67"--"68";"68"--"69";
"69"--"70";"70"--"71";"70"--"79";"71"--"72";"72"--"73";"72"--"89";"73"--"74";"74"--"75";"75"--"76";
"76"--"77";"76"--"85";"77"--"78";"78"--"79";"79"--"80";"80"--"81";"81"--"82";"82"--"83";"83"--"84";
"84"--"85";"85"--"86";"86"--"87";"87"--"88";"88"--"89";
}

The Problem is: The graph contains a Hamiltonion circle (as you can see in the PNG version), but if i type

dot -Tsvg -Kcirco -o Forster-Graph.svg Forster-Graph.dot

i get something similarly, but the edges are more or less chaotic arranged – in particular, the “outer edge circle” has a gap. Maybe you can give me a clue how to fix this? Best greetings, --Frakturfreund (talk) 21:52, 8 February 2010 (UTC)

Hello, I have written a little program for computing the exact position of the vertices when there is an hamiltonian cycle. With Graphviz/neato you can fix the position of a given vertices. So I chose a cycle and I draw a polygon with the vertices of this cycle.

I use "neato -Tsvg foster.dot > foster.svg"

With the following file :

graph G {
node [shape=point,label="",height=.15,width=.15,color=red];
1 [ pos = "8.48528,4.24264!" ]; 2 [ pos = "8.47495,4.53859!" ]; 3 [ pos = "8.44399,4.8331!" ]; 
4 [ pos = "8.39257,5.12474!" ]; 5 [ pos = "8.32093,5.41207!" ]; 6 [ pos = "8.22942,5.69371!" ];
7 [ pos = "8.11849,5.96828!" ]; 8 [ pos = "7.98867,6.23444!" ]; 9 [ pos = "7.8406,6.4909!" ];
10 [ pos = "7.67501,6.7364!" ]; 11 [ pos = "7.49269,6.96976!" ]; 12 [ pos = "7.29454,7.18983!" ];
13 [ pos = "7.08152,7.39554!" ]; 14 [ pos = "6.85467,7.58589!" ]; 15 [ pos = "6.6151,7.75995!" ];
16 [ pos = "6.36396,7.91688!" ]; 17 [ pos = "6.10249,8.0559!" ]; 18 [ pos = "5.83196,8.17635!" ];
19 [ pos = "5.55369,8.27763!" ]; 20 [ pos = "5.26903,8.35926!" ]; 21 [ pos = "4.97937,8.42083!" ];
22 [ pos = "4.68612,8.46204!" ]; 23 [ pos = "4.39071,8.4827!" ]; 24 [ pos = "4.09457,8.4827!" ];
25 [ pos = "3.79916,8.46204!" ]; 26 [ pos = "3.50591,8.42083!" ]; 27 [ pos = "3.21625,8.35926!" ];
28 [ pos = "2.93159,8.27763!" ]; 29 [ pos = "2.65332,8.17635!" ]; 30 [ pos = "2.38279,8.0559!" ];
31 [ pos = "2.12132,7.91688!" ]; 32 [ pos = "1.87019,7.75995!" ]; 33 [ pos = "1.63061,7.58589!" ];
34 [ pos = "1.40376,7.39554!" ]; 35 [ pos = "1.19074,7.18983!" ]; 36 [ pos = "0.992589,6.96976!" ];
37 [ pos = "0.810272,6.7364!" ]; 38 [ pos = "0.644677,6.4909!" ]; 39 [ pos = "0.496611,6.23444!" ];
40 [ pos = "0.366796,5.96828!" ]; 41 [ pos = "0.255863,5.69371!" ]; 42 [ pos = "0.164353,5.41207!" ];
43 [ pos = "0.0927119,5.12474!" ]; 44 [ pos = "0.0412891,4.8331!" ]; 45 [ pos = "0.0103349,4.53859!" ];
46 [ pos = "0,4.24264!" ]; 47 [ pos = "0.0103349,3.94669!" ]; 48 [ pos = "0.0412891,3.65218!" ];
49 [ pos = "0.0927119,3.36055!" ]; 50 [ pos = "0.164353,3.07321!" ]; 51 [ pos = "0.255863,2.79157!" ];
52 [ pos = "0.366796,2.517!" ]; 53 [ pos = "0.496611,2.25084!" ]; 54 [ pos = "0.644677,1.99438!" ];
55 [ pos = "0.810272,1.74888!" ]; 56 [ pos = "0.992589,1.51552!" ]; 57 [ pos = "1.19074,1.29545!" ];
58 [ pos = "1.40376,1.08974!" ]; 59 [ pos = "1.63061,0.899394!" ]; 60 [ pos = "1.87019,0.725332!" ];
61 [ pos = "2.12132,0.568406!" ]; 62 [ pos = "2.38279,0.42938!" ]; 63 [ pos = "2.65332,0.308933!" ];
64 [ pos = "2.93159,0.20765!" ]; 65 [ pos = "3.21625,0.126025!" ]; 66 [ pos = "3.50591,0.0644552!" ];
67 [ pos = "3.79916,0.0232416!" ]; 68 [ pos = "4.09457,0.0025845!" ]; 69 [ pos = "4.39071,0.0025845!" ];
70 [ pos = "4.68612,0.0232416!" ]; 71 [ pos = "4.97937,0.0644552!" ]; 72 [ pos = "5.26903,0.126025!" ];
73 [ pos = "5.55369,0.20765!" ]; 74 [ pos = "5.83196,0.308933!" ]; 75 [ pos = "6.10249,0.42938!" ];
76 [ pos = "6.36396,0.568406!" ]; 77 [ pos = "6.6151,0.725332!" ]; 78 [ pos = "6.85467,0.899394!" ];
79 [ pos = "7.08152,1.08974!" ]; 80 [ pos = "7.29454,1.29545!" ]; 81 [ pos = "7.49269,1.51552!" ];
82 [ pos = "7.67501,1.74888!" ]; 83 [ pos = "7.8406,1.99438!" ]; 84 [ pos = "7.98867,2.25084!" ];
85 [ pos = "8.11849,2.517!" ]; 86 [ pos = "8.22942,2.79157!" ]; 87 [ pos = "8.32093,3.07321!" ];
88 [ pos = "8.39257,3.36055!" ]; 89 [ pos = "8.44399,3.65218!" ]; 90 [ pos = "8.47495,3.94669!" ];
2 -- 1; 3 -- 2; 4 -- 3; 5 -- 4; 6 -- 5; 7 -- 6; 8 -- 7; 9 -- 8; 10 -- 9; 11 -- 10; 12 -- 11; 13 -- 12;
14 -- 5; 14 -- 13; 15 -- 14; 16 -- 15; 17 -- 16; 18 -- 1; 18 -- 17; 19 -- 18; 20 -- 11; 20 -- 19;
21 -- 20; 22 -- 21; 23 -- 22; 24 -- 7; 24 -- 23; 25 -- 24; 26 -- 17; 26 -- 25; 27 -- 26; 28 -- 27;
29 -- 28; 30 -- 13; 30 -- 29; 31 -- 30; 32 -- 23; 32 -- 31; 33 -- 32; 34 -- 33; 35 -- 34; 36 -- 19;
36 -- 35; 37 -- 36; 38 -- 29; 38 -- 37; 39 -- 38; 40 -- 3; 40 -- 39; 41 -- 40; 42 -- 25; 42 -- 41;
43 -- 42; 44 -- 35; 44 -- 43; 45 -- 44; 46 -- 9; 46 -- 45; 47 -- 46; 48 -- 31; 48 -- 47; 49 -- 48;
50 -- 41; 50 -- 49; 51 -- 50; 52 -- 15; 52 -- 51; 53 -- 52; 54 -- 37; 54 -- 53; 55 -- 54; 56 -- 47;
56 -- 55; 57 -- 4; 57 -- 56; 58 -- 21; 58 -- 57; 59 -- 58; 60 -- 43; 60 -- 59; 61 -- 60; 62 -- 53;
62 -- 61; 63 -- 10; 63 -- 62; 64 -- 27; 64 -- 63; 65 -- 64; 66 -- 49; 66 -- 65; 67 -- 66; 68 -- 59;
68 -- 67; 69 -- 16; 69 -- 68; 70 -- 33; 70 -- 69; 71 -- 70; 72 -- 55; 72 -- 71; 73 -- 72; 74 -- 65;
74 -- 73; 75 -- 22; 75 -- 74; 76 -- 39; 76 -- 75; 77 -- 76; 78 -- 61; 78 -- 77; 79 -- 6; 79 -- 78;
80 -- 71; 80 -- 79; 81 -- 28; 81 -- 80; 82 -- 45; 82 -- 81; 83 -- 2; 83 -- 82; 84 -- 67; 84 -- 83;
85 -- 12; 85 -- 84; 86 -- 77; 86 -- 85; 87 -- 34; 87 -- 86; 88 -- 51; 88 -- 87; 89 -- 8; 89 -- 88;
90 -- 1; 90 -- 73; 90 -- 89;  }

By the way, there are already some SVG for the Foster graph : Category:Foster graph

Koko90 (talk) 10:07, 9 February 2010 (UTC)

You can take my dot file and give the wanted names to the vertices. It is possible to give any label to any vertex with graphwiz. Koko90 (talk) 12:56, 9 February 2010 (UTC)

I see. But I'd have to edit the all by hand, wouldn't I?--0g1o2i3k4e5n6 (talk) 12:59, 9 February 2010 (UTC)

Here is the code :

graph G {
1 [ pos = "8.48528,4.24264!"]; 2 [ pos = "8.47495,4.53859!" ]; 3 [ pos = "8.44399,4.8331!" ]; 4 [ pos = "8.39257,5.12474!" ];
5 [ pos = "8.32093,5.41207!" ]; 6 [ pos = "8.22942,5.69371!" ]; 7 [ pos = "8.11849,5.96828!" ]; 8 [ pos = "7.98867,6.23444!" ];
9 [ pos = "7.8406,6.4909!" ]; 10 [ pos = "7.67501,6.7364!" ]; 11 [ pos = "7.49269,6.96976!" ]; 12 [ pos = "7.29454,7.18983!" ];
13 [ pos = "7.08152,7.39554!" ]; 14 [ pos = "6.85467,7.58589!" ]; 15 [ pos = "6.6151,7.75995!" ]; 16 [ pos = "6.36396,7.91688!" ];
17 [ pos = "6.10249,8.0559!" ]; 18 [ pos = "5.83196,8.17635!" ]; 19 [ pos = "5.55369,8.27763!" ]; 20 [ pos = "5.26903,8.35926!" ];
21 [ pos = "4.97937,8.42083!" ]; 22 [ pos = "4.68612,8.46204!" ]; 23 [ pos = "4.39071,8.4827!" ]; 24 [ pos = "4.09457,8.4827!" ];
25 [ pos = "3.79916,8.46204!" ]; 26 [ pos = "3.50591,8.42083!" ]; 27 [ pos = "3.21625,8.35926!" ]; 28 [ pos = "2.93159,8.27763!" ];
29 [ pos = "2.65332,8.17635!" ]; 30 [ pos = "2.38279,8.0559!" ]; 31 [ pos = "2.12132,7.91688!" ]; 32 [ pos = "1.87019,7.75995!" ];
33 [ pos = "1.63061,7.58589!" ]; 34 [ pos = "1.40376,7.39554!" ]; 35 [ pos = "1.19074,7.18983!" ]; 36 [ pos = "0.992589,6.96976!" ];
37 [ pos = "0.810272,6.7364!" ]; 38 [ pos = "0.644677,6.4909!" ]; 39 [ pos = "0.496611,6.23444!" ]; 40 [ pos = "0.366796,5.96828!" ];
41 [ pos = "0.255863,5.69371!" ]; 42 [ pos = "0.164353,5.41207!" ]; 43 [ pos = "0.0927119,5.12474!" ]; 44 [ pos = "0.0412891,4.8331!" ];
45 [ pos = "0.0103349,4.53859!" ]; 46 [ pos = "0,4.24264!" ]; 47 [ pos = "0.0103349,3.94669!" ]; 48 [ pos = "0.0412891,3.65218!" ];
49 [ pos = "0.0927119,3.36055!" ]; 50 [ pos = "0.164353,3.07321!" ]; 51 [ pos = "0.255863,2.79157!" ]; 52 [ pos = "0.366796,2.517!" ];
53 [ pos = "0.496611,2.25084!" ]; 54 [ pos = "0.644677,1.99438!" ]; 55 [ pos = "0.810272,1.74888!" ]; 56 [ pos = "0.992589,1.51552!" ];
57 [ pos = "1.19074,1.29545!" ]; 58 [ pos = "1.40376,1.08974!" ]; 59 [ pos = "1.63061,0.899394!" ]; 60 [ pos = "1.87019,0.725332!" ];
61 [ pos = "2.12132,0.568406!" ]; 62 [ pos = "2.38279,0.42938!" ]; 63 [ pos = "2.65332,0.308933!" ]; 64 [ pos = "2.93159,0.20765!" ];
65 [ pos = "3.21625,0.126025!" ]; 66 [ pos = "3.50591,0.0644552!" ]; 67 [ pos = "3.79916,0.0232416!" ]; 68 [ pos = "4.09457,0.0025845!" ];
69 [ pos = "4.39071,0.0025845!" ]; 70 [ pos = "4.68612,0.0232416!" ]; 71 [ pos = "4.97937,0.0644552!" ]; 72 [ pos = "5.26903,0.126025!" ];
73 [ pos = "5.55369,0.20765!" ]; 74 [ pos = "5.83196,0.308933!" ]; 75 [ pos = "6.10249,0.42938!" ]; 76 [ pos = "6.36396,0.568406!" ];
77 [ pos = "6.6151,0.725332!" ]; 78 [ pos = "6.85467,0.899394!" ]; 79 [ pos = "7.08152,1.08974!" ]; 80 [ pos = "7.29454,1.29545!" ];
81 [ pos = "7.49269,1.51552!" ]; 82 [ pos = "7.67501,1.74888!" ]; 83 [ pos = "7.8406,1.99438!" ]; 84 [ pos = "7.98867,2.25084!" ];
85 [ pos = "8.11849,2.517!" ]; 86 [ pos = "8.22942,2.79157!" ]; 87 [ pos = "8.32093,3.07321!" ]; 88 [ pos = "8.39257,3.36055!" ];
89 [ pos = "8.44399,3.65218!" ]; 0 [ pos = "8.47495,3.94669!" ];
"0"--"1";"0"--"89";"0"--"17";"1"--"2";"1"--"82";"2"--"3";"2"--"39";"3"--"56";"3"--"4";"4"--"5";"4"--"13";"5"--"6";
"5"--"78";"6"--"7";"6"--"23";"7"--"8";"7"--"88";"8"--"9";"8"--"45";"9"--"10";"9"--"62";"10"--"11";"10"--"19";
"11"--"12";"11"--"84";"12"--"13";"12"--"29";"13"--"14";"14"--"51";"14"--"15";"15"--"16";"15"--"68";"16"--"17";
"16"--"25";"17"--"18";"18"--"19";"18"--"35";"19"--"20";"20"--"57";"20"--"21";"21"--"74";"21"--"22";"22"--"23";
"22"--"31";"23"--"24";"24"--"25";"24"--"41";"25"--"26";"26"--"27";"26"--"63";"27"--"80";"27"--"28";"28"--"29";
"28"--"37";"29"--"30";"30"--"31";"30"--"47";"31"--"32";"32"--"33";"32"--"69";"33"--"34";"33"--"86";"34"--"35";
"34"--"43";"35"--"36";"36"--"37";"36"--"53";"37"--"38";"38"--"75";"38"--"39";"39"--"40";"40"--"41";"40"--"49";
"41"--"42";"42"--"43";"42"--"59";"43"--"44";"44"--"81";"44"--"45";"45"--"46";"46"--"47";"46"--"55";"47"--"48";
"48"--"49";"48"--"65";"49"--"50";"50"--"51";"50"--"87";"51"--"52";"52"--"53";"52"--"61";"53"--"54";"54"--"55";
"54"--"71";"55"--"56";"56"--"57";"57"--"58";"58"--"67";"58"--"59";"59"--"60";"60"--"61";"60"--"77";"61"--"62";
"62"--"63";"63"--"64";"64"--"65";"64"--"73";"65"--"66";"66"--"67";"66"--"83";"67"--"68";"68"--"69";"69"--"70";
"70"--"71";"70"--"79";"71"--"72";"72"--"73";"72"--"89";"73"--"74";"74"--"75";"75"--"76";"76"--"77";"76"--"85";
"77"--"78";"78"--"79";"79"--"80";"80"--"81";"81"--"82";"82"--"83";"83"--"84";"84"--"85";"85"--"86";"86"--"87";
"87"--"88";"88"--"89"; }

The reason why I created another one in the first place, was to illustrate de:LCF-Notation. There it was of some importance to me, that the nodes were aligned in a particular hamiltonian way. I also wanted one particular node (determined by the lcf-code) to be at the top of the embedding.--0g1o2i3k4e5n6 (talk) 12:53, 9 February 2010 (UTC)

For the correct style options, i have no time. Koko90 (talk) 14:26, 9 February 2010 (UTC)

Thank you very much for your rapid responce and the two DOT files, for me that’s more as enough stuff to think about :). Best Greetings, --Frakturfreund (talk) 08:37, 10 February 2010 (UTC)

TUSC token bb3b9780c86c4698df104c05edd80ac8

I am now proud owner of a TUSC account!

Pointer to discussion elsewhere

I left you a message on your Wikipedia talk page. In short, there may be some copyright issues with your graph drawings, as they are very close to the ones on MathWorld. —David Eppstein (talk) 22:59, 24 June 2010 (UTC)

See my answer on Wikipedia. The style can be changed in a few hours. The problem is "how different need to be the layouts ?". MathWorld layouts are very classical layouts (except for a few graphs). Koko90 (talk) 12:22, 25 June 2010 (UTC)

When you make use of a resource, such as MathWorld or Mathematica/GraphData, you need to give credit. You can't just claim "own work" on everything, or move a few points and do the same. This is wholesale copying of my work. For example -- http://en.wikipedia.org/wiki/File:McGee_graph_crossing_number.svg -- this is an exact copy of my GraphData representation. Give credit -- don't claim this is your research, because it isn't. Most of the graphs you copied were *not* classical layouts. -- Ed Pegg Jr

There is a link to Pegg, E. T. and Exoo, G. "Crossing Number Graphs." Mathematica J. 11, 2009 on the McGee graph page. This link should be on Commons too. I will add it.

I am writing a list of graphs I uploaded on commons and that are not classical layouts. Then I will add references to all of them.

Koko90 (talk) 07:24, 28 June 2010 (UTC)

The source are here now. If you want a specific graph (or a list of graphs) to be removed, please let it know. If I forgot a reference, please let it know. Koko90 (talk)

« Patrouilles automatiques »

En passant, je t’ai donné les droits d’Autopatrolled. Concrètement, cela ne changera rien dans ta manière de contribuer à Commons, mais les patrouilleurs de Special:RecentChanges et Special:NewPages sauront qu’il n’y a pas besoin de vérifier tes contributions en quête de vandalisme ou de grave boulette (tes modifications ne seront plus marquées du disgracieux point d’exclamation rouge).

Amicalement, Jean-Fred (talk) 15:09, 19 July 2010 (UTC)

Merci beaucoup. Koko90 (talk) 15:37, 19 July 2010 (UTC)

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