Jtdylktuy

I am quite new to tikz and I am trying to draw a circle with points regularly positioned on it. My code works well if I ask lower or equal to 46 points. For more points everyting is going wrong (points are mispositioned) but there is no error message with the compilation.

Here is my code :

documentclass[french,12pt]{article} % I'm in France.



usepackage[utf8]{inputenc}

usepackage[T1]{fontenc}

usepackage{lmodern}

usepackage[a4paper]{geometry}

geometry{top=1.5cm,bottom=1.5cm,left=1.5cm,right=1.5cm}

usepackage[french]{babel}

usepackage{pgfplots}



usetikzlibrary{calc,quotes,arrows}

usepackage{fancyhdr}

usepackage{graphicx}



pagestyle{empty}



begin{document}



    sffamily 



    newcommand{rayon}{5cm} % Rayon du cercle en cm (radius of the circle)

    newcommand{nbPt}{46} % Nombre de points sur le cercle (Number of points on the circle)

    pgfmathsetmacro{nb}{nbPt-1}



    begin{center}

        begin{tikzpicture}

            draw(0,0) circle (rayon); % Tracer le cercle (Draw the circle)

            foreach i in {0,1,...,nb} {

                pgfmathsetmacro{angle}{360*i/nbPt};

                draw(angle:rayon) node{+}; draw(angle:rayon*1.08) node{i};

            }

        end{tikzpicture}

    end{center}



end{document}

May be I do some mistakes but I can't find where. It will be great if someone can give me some help.

Thank you.

The problem is that pgf uses TeX dimensions to do its mathematics. The maximum dimension it could handle is 16383.99998 pt (TeX’s largest dimen). So, you have to change the order of this calculation pgfmathsetmacro{angle}{360*i/nbPt};. First divide by nbPt then multiply by i or just put two parens around (i/nbPt) to avoid large dimensions.

documentclass[french,12pt]{article} % I'm in France.



usepackage[utf8]{inputenc}

usepackage[T1]{fontenc}

usepackage{lmodern}

usepackage[a4paper]{geometry}

geometry{top=1.5cm,bottom=1.5cm,left=1.5cm,right=1.5cm}

usepackage[french]{babel}

usepackage{tikz}



usetikzlibrary{calc,quotes,arrows}

usepackage{fancyhdr}

usepackage{graphicx}



pagestyle{empty}



begin{document}



    sffamily 



    newcommand{rayon}{5cm} % Rayon du cercle en cm (radius of the circle)

    newcommand{nbPt}{60} % Nombre de points sur le cercle (Number of points on the circle)

    pgfmathsetmacro{nb}{nbPt-1}



    begin{center}

        begin{tikzpicture}

            draw(0,0) circle (rayon); % Tracer le cercle (Draw the circle)

            foreach i in {0,1,...,nb} {

                pgfmathsetmacro{angle}{360/nbPt*i};

                draw(angle:rayon) node{+}; draw(angle:rayon*1.08) node{i};

            }

        end{tikzpicture}

    end{center}



end{document}