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1

I am trying to draw a tree using tikzpicture like this:

begintikzpicture
 tikzstylenode=[circle, fill=blue!25, minimum size=0.1 cm];
 foreach ilayer in 0,...,3 
 tikzmath nnodes = 3 ^ ilayer; 
 tikzmath leftnum = 1 - floor(nnodes / 2) - 1; 
 tikzmath rightnum = nnodes - floor(nnodes / 2) - 1; 
 foreach isibling in leftnum,...,rightnum 
 tikzmath d = 3 ^ (- ilayer) * 15; 
 tikzmath x = isibling * d; 
 tikzmath y = - ilayer * 2; 
 node[node] (node_ilayer_isibling) at (x cm, y cm) isibling;
 
 
endtikzpicture

I get the tree like the following picture. The texts are nodes' isibling within each layer. Most nodes are integers, but all leftmost nodes are not.

tikz-pgf foreach

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asked 11 mins ago

landingslandings

6

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landings is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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1

I am trying to draw a tree using tikzpicture like this:

begintikzpicture
 tikzstylenode=[circle, fill=blue!25, minimum size=0.1 cm];
 foreach ilayer in 0,...,3 
 tikzmath nnodes = 3 ^ ilayer; 
 tikzmath leftnum = 1 - floor(nnodes / 2) - 1; 
 tikzmath rightnum = nnodes - floor(nnodes / 2) - 1; 
 foreach isibling in leftnum,...,rightnum 
 tikzmath d = 3 ^ (- ilayer) * 15; 
 tikzmath x = isibling * d; 
 tikzmath y = - ilayer * 2; 
 node[node] (node_ilayer_isibling) at (x cm, y cm) isibling;
 
 
endtikzpicture

I get the tree like the following picture. The texts are nodes' isibling within each layer. Most nodes are integers, but all leftmost nodes are not.

tikz-pgf foreach

share|improve this question

asked 11 mins ago

landingslandings

6

New contributor

landings is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

I am trying to draw a tree using tikzpicture like this:

begintikzpicture
 tikzstylenode=[circle, fill=blue!25, minimum size=0.1 cm];
 foreach ilayer in 0,...,3 
 tikzmath nnodes = 3 ^ ilayer; 
 tikzmath leftnum = 1 - floor(nnodes / 2) - 1; 
 tikzmath rightnum = nnodes - floor(nnodes / 2) - 1; 
 foreach isibling in leftnum,...,rightnum 
 tikzmath d = 3 ^ (- ilayer) * 15; 
 tikzmath x = isibling * d; 
 tikzmath y = - ilayer * 2; 
 node[node] (node_ilayer_isibling) at (x cm, y cm) isibling;
 
 
endtikzpicture

I get the tree like the following picture. The texts are nodes' isibling within each layer. Most nodes are integers, but all leftmost nodes are not.

tikz-pgf foreach

share|improve this question

asked 11 mins ago

landingslandings

6

New contributor

landings is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

begintikzpicture
 tikzstylenode=[circle, fill=blue!25, minimum size=0.1 cm];
 foreach ilayer in 0,...,3 
 tikzmath nnodes = 3 ^ ilayer; 
 tikzmath leftnum = 1 - floor(nnodes / 2) - 1; 
 tikzmath rightnum = nnodes - floor(nnodes / 2) - 1; 
 foreach isibling in leftnum,...,rightnum 
 tikzmath d = 3 ^ (- ilayer) * 15; 
 tikzmath x = isibling * d; 
 tikzmath y = - ilayer * 2; 
 node[node] (node_ilayer_isibling) at (x cm, y cm) isibling;
 
 
endtikzpicture

share|improve this question

asked 11 mins ago

landingslandings

6

New contributor

landings is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 11 mins ago

landingslandings

6

New contributor

landings is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 11 mins ago

landingslandings

6

New contributor

landings is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 11 mins ago

landingslandings

6

1 Answer
1

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0

You could just tell TikZ explicitly that you want an integer.

documentclass[tikz,border=3.14mm]standalone
usetikzlibrarymath
begindocument
begintikzpicture
 tikzsetmynode/.style=circle, fill=blue!25, minimum size=0.1 cm
 foreach ilayer in 0,...,3 
 tikzmath nnodes = 3 ^ ilayer; 
 tikzmath leftnum = int(1 - floor(nnodes / 2) - 1); 
 tikzmath rightnum = nnodes - floor(nnodes / 2) - 1; 
 foreach isibling in leftnum,...,rightnum 
 tikzmath d = 3 ^ (- ilayer) * 15; 
 tikzmath x = isibling * d; 
 tikzmath y = - ilayer * 2; 
 node[mynode] (node_ilayer_isibling) at (x cm, y cm) isibling;
 
 
endtikzpicture
enddocument

share

answered 6 mins ago

marmotmarmot

112k5141267

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0

You could just tell TikZ explicitly that you want an integer.

documentclass[tikz,border=3.14mm]standalone
usetikzlibrarymath
begindocument
begintikzpicture
 tikzsetmynode/.style=circle, fill=blue!25, minimum size=0.1 cm
 foreach ilayer in 0,...,3 
 tikzmath nnodes = 3 ^ ilayer; 
 tikzmath leftnum = int(1 - floor(nnodes / 2) - 1); 
 tikzmath rightnum = nnodes - floor(nnodes / 2) - 1; 
 foreach isibling in leftnum,...,rightnum 
 tikzmath d = 3 ^ (- ilayer) * 15; 
 tikzmath x = isibling * d; 
 tikzmath y = - ilayer * 2; 
 node[mynode] (node_ilayer_isibling) at (x cm, y cm) isibling;
 
 
endtikzpicture
enddocument

share

answered 6 mins ago

marmotmarmot

112k5141267

add a comment | 

0

You could just tell TikZ explicitly that you want an integer.

documentclass[tikz,border=3.14mm]standalone
usetikzlibrarymath
begindocument
begintikzpicture
 tikzsetmynode/.style=circle, fill=blue!25, minimum size=0.1 cm
 foreach ilayer in 0,...,3 
 tikzmath nnodes = 3 ^ ilayer; 
 tikzmath leftnum = int(1 - floor(nnodes / 2) - 1); 
 tikzmath rightnum = nnodes - floor(nnodes / 2) - 1; 
 foreach isibling in leftnum,...,rightnum 
 tikzmath d = 3 ^ (- ilayer) * 15; 
 tikzmath x = isibling * d; 
 tikzmath y = - ilayer * 2; 
 node[mynode] (node_ilayer_isibling) at (x cm, y cm) isibling;
 
 
endtikzpicture
enddocument

share

answered 6 mins ago

marmotmarmot

112k5141267

add a comment | 

You could just tell TikZ explicitly that you want an integer.

documentclass[tikz,border=3.14mm]standalone
usetikzlibrarymath
begindocument
begintikzpicture
 tikzsetmynode/.style=circle, fill=blue!25, minimum size=0.1 cm
 foreach ilayer in 0,...,3 
 tikzmath nnodes = 3 ^ ilayer; 
 tikzmath leftnum = int(1 - floor(nnodes / 2) - 1); 
 tikzmath rightnum = nnodes - floor(nnodes / 2) - 1; 
 foreach isibling in leftnum,...,rightnum 
 tikzmath d = 3 ^ (- ilayer) * 15; 
 tikzmath x = isibling * d; 
 tikzmath y = - ilayer * 2; 
 node[mynode] (node_ilayer_isibling) at (x cm, y cm) isibling;
 
 
endtikzpicture
enddocument

share

answered 6 mins ago

marmotmarmot

112k5141267

documentclass[tikz,border=3.14mm]standalone
usetikzlibrarymath
begindocument
begintikzpicture
 tikzsetmynode/.style=circle, fill=blue!25, minimum size=0.1 cm
 foreach ilayer in 0,...,3 
 tikzmath nnodes = 3 ^ ilayer; 
 tikzmath leftnum = int(1 - floor(nnodes / 2) - 1); 
 tikzmath rightnum = nnodes - floor(nnodes / 2) - 1; 
 foreach isibling in leftnum,...,rightnum 
 tikzmath d = 3 ^ (- ilayer) * 15; 
 tikzmath x = isibling * d; 
 tikzmath y = - ilayer * 2; 
 node[mynode] (node_ilayer_isibling) at (x cm, y cm) isibling;
 
 
endtikzpicture
enddocument

share

answered 6 mins ago

marmotmarmot

112k5141267

answered 6 mins ago

marmotmarmot

112k5141267

answered 6 mins ago

marmotmarmot

112k5141267