Dot grid with increasing dot size
Yes, it is.
\documentclass[border=3.14mm,tikz]{standalone}
\begin{document}
\begin{tikzpicture}
\foreach \X in {1,...,50}
{\foreach \Y in {1,...,50}
\fill (\X*8pt,-\Y*8pt) circle ({(1+0.5*veclen(\X,\Y))*0.1pt});
}
\end{tikzpicture}
\end{document}
EDIT: Just for fun and for J. Leon V. ;-)
\documentclass[border=3.14mm,tikz]{standalone}
\usetikzlibrary{shadings}
\begin{document}
\foreach \Z in {0,30,...,330}
{\begin{tikzpicture}
\clip (0,0) circle (25.5*8pt);
\shade[shading=color wheel,even odd rule,transform canvas={rotate=\Z}]
foreach \X in {-25,...,25}
{foreach \Y in {-25,...,25}
{ (\X*8pt,-\Y*8pt) circle ({(1+12*(1.2+sin(\Z+50*veclen(\X,\Y))))*0.1pt})
}
};
\end{tikzpicture}}
\end{document}
A linear option variation from radial @marmot's great answer.
RESULT:
MWE:
\documentclass[border=20pt,tikz]{standalone}
\begin{document}
\begin{tikzpicture}
\foreach \X in {1,...,50}{
\foreach \Y in {1,...,50}{
\fill (\X*10pt,-\Y*10pt) circle ({(\X+\Y+5)*0.05pt});
}
}
\end{tikzpicture}
\end{document}
ADDENDUM
After some collateral damage I only see marmots everywhere ...
MWE:
\documentclass[border=20pt,tikz]{standalone}
\begin{document}
\begin{tikzpicture}
\foreach \Line [count=\y from 0] in {
{1,1,2,2,1,1,1,1,1,12,53,4,1,2,1,4,5,48,13,1,5,1,4,1,1,1,1,1,1,1},
{1,2,2,1,1,5,3,2,5,81,202,112,42,89,86,36,75,198,128,7,1,4,1,2,1,1,1,1,1,1},
{1,4,2,1,3,1,1,1,6,139,208,188,188,200,209,202,172,201,195,4,1,1,2,1,1,1,1,1,1,1},
{1,1,1,4,2,1,1,2,1,150,179,159,164,171,185,193,214,220,158,1,4,1,1,1,1,1,1,1,1,1},
{4,1,1,2,1,1,4,2,5,121,155,142,140,163,172,188,187,215,152,9,1,1,7,1,1,1,1,1,1,1},
{2,1,3,1,1,3,1,1,85,147,125,140,153,141,152,175,202,196,216,89,4,1,1,2,1,1,1,1,1,1},
{1,1,5,1,2,2,1,25,140,117,107,179,171,119,141,179,212,201,214,190,20,1,5,1,1,1,1,1,1,1},
{1,1,4,1,4,1,8,77,140,106,82,98,104,137,168,159,178,185,199,227,90,2,1,3,1,1,1,1,1,1},
{2,2,1,1,2,1,11,133,124,80,68,63,107,190,235,173,163,183,198,217,172,1,2,2,1,1,1,1,1,1},
{1,2,1,2,4,3,46,148,112,76,47,79,69,144,183,163,183,188,196,216,205,43,2,1,1,1,1,1,1,1},
{1,2,1,2,2,1,89,154,101,67,67,143,95,71,109,171,199,192,195,208,229,98,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,126,150,119,73,60,129,177,178,185,198,187,188,195,203,230,146,2,2,1,1,1,1,1,1},
{2,1,1,2,2,14,156,149,109,94,74,68,106,138,152,154,167,183,199,205,221,186,12,1,1,1,1,1,1,1},
{3,1,1,1,1,33,173,152,126,98,94,95,118,131,146,161,170,190,201,207,215,210,28,1,1,1,1,1,1,1},
{3,1,1,1,1,55,186,169,140,115,109,109,118,122,145,165,176,193,199,209,223,222,42,1,1,1,1,1,1,1},
{2,1,3,1,2,75,201,191,194,146,76,63,63,83,110,141,167,184,196,215,241,229,50,1,1,1,1,1,1,1},
{3,2,1,1,1,96,211,114,150,206,67,23,42,59,88,123,158,165,121,176,236,237,70,1,1,2,1,2,1,2},
{1,1,2,2,4,97,207,149,161,233,114,10,32,47,83,117,146,170,132,173,231,245,83,3,1,3,4,1,1,5},
{2,2,2,1,7,100,214,198,196,246,180,33,46,57,82,115,148,204,196,211,235,240,79,1,1,1,1,5,3,1},
{3,2,1,1,4,96,222,214,232,248,192,50,59,74,97,129,151,213,236,234,231,235,73,5,1,6,1,3,1,1},
{1,1,1,2,1,83,223,199,226,243,167,79,91,100,121,143,158,203,244,233,225,233,60,1,3,1,3,1,2,1},
{1,2,1,3,1,60,220,200,173,181,136,120,126,131,143,158,168,184,212,208,224,229,44,1,1,64,58,2,4,7},
{2,3,1,1,1,30,202,219,185,167,155,159,153,155,162,175,191,192,202,212,236,206,22,19,133,248,59,3,1,3},
{1,2,1,1,2,3,174,226,200,191,182,174,174,174,182,185,191,202,206,218,233,196,90,191,256,148,10,1,1,1},
{1,2,4,1,1,4,99,235,214,204,197,193,193,191,189,200,204,208,217,228,234,216,220,241,146,8,3,2,2,3},
{3,1,1,1,4,1,17,186,231,219,210,202,201,206,208,212,211,221,221,231,231,205,155,67,1,4,1,1,1,1},
{1,5,2,2,4,1,8,34,210,220,229,221,215,220,219,217,219,229,236,219,88,23,5,1,1,1,2,1,1,2},
{1,1,1,1,2,9,1,77,155,186,213,220,229,236,230,229,226,221,229,226,89,1,1,7,1,2,1,1,1,1},
{2,1,5,4,1,1,3,136,222,208,227,256,227,144,143,231,244,227,242,254,143,14,1,1,1,2,1,1,1,1},
{1,3,1,1,8,4,1,3,65,99,115,94,52,7,3,47,92,109,103,57,1,1,10,1,1,1,2,1,1,2}% Yes this percent is suspicious...
}{
\foreach \pixel [count=\x from 0] in \Line {
\ifnum\pixel<20
\fill (\x*10pt,-\y*10pt) circle (20*0.025pt);
\else
\fill (\x*10pt,-\y*10pt) circle (\pixel*0.025pt);
\fi
}
}
\end{tikzpicture}
\end{document}
PSD: To get the marmot icon data I use LCD-Image-converter, then some text manipulation using Excel to get decimal values.
ADDENDUM 2
For your friend ;) ... declaring each point as a rectanble 10x10pt sized, controling the black color filling usinsg the values from the data array.
RESULT:
MWE:
% arara: pdflatex: {synctex: yes, action: nonstopmode}
\documentclass[border=20pt,tikz]{standalone}
\begin{document}
\begin{tikzpicture}
\foreach \Line [count=\y from 0] in {
{1,1,2,2,1,1,1,1,1,12,53,4,1,2,1,4,5,48,13,1,5,1,4,1,1,1,1,1,1,1},
{1,2,2,1,1,5,3,2,5,81,202,112,42,89,86,36,75,198,128,7,1,4,1,2,1,1,1,1,1,1},
{1,4,2,1,3,1,1,1,6,139,208,188,188,200,209,202,172,201,195,4,1,1,2,1,1,1,1,1,1,1},
{1,1,1,4,2,1,1,2,1,150,179,159,164,171,185,193,214,220,158,1,4,1,1,1,1,1,1,1,1,1},
{4,1,1,2,1,1,4,2,5,121,155,142,140,163,172,188,187,215,152,9,1,1,7,1,1,1,1,1,1,1},
{2,1,3,1,1,3,1,1,85,147,125,140,153,141,152,175,202,196,216,89,4,1,1,2,1,1,1,1,1,1},
{1,1,5,1,2,2,1,25,140,117,107,179,171,119,141,179,212,201,214,190,20,1,5,1,1,1,1,1,1,1},
{1,1,4,1,4,1,8,77,140,106,82,98,104,137,168,159,178,185,199,227,90,2,1,3,1,1,1,1,1,1},
{2,2,1,1,2,1,11,133,124,80,68,63,107,190,235,173,163,183,198,217,172,1,2,2,1,1,1,1,1,1},
{1,2,1,2,4,3,46,148,112,76,47,79,69,144,183,163,183,188,196,216,205,43,2,1,1,1,1,1,1,1},
{1,2,1,2,2,1,89,154,101,67,67,143,95,71,109,171,199,192,195,208,229,98,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,126,150,119,73,60,129,177,178,185,198,187,188,195,203,230,146,2,2,1,1,1,1,1,1},
{2,1,1,2,2,14,156,149,109,94,74,68,106,138,152,154,167,183,199,205,221,186,12,1,1,1,1,1,1,1},
{3,1,1,1,1,33,173,152,126,98,94,95,118,131,146,161,170,190,201,207,215,210,28,1,1,1,1,1,1,1},
{3,1,1,1,1,55,186,169,140,115,109,109,118,122,145,165,176,193,199,209,223,222,42,1,1,1,1,1,1,1},
{2,1,3,1,2,75,201,191,194,146,76,63,63,83,110,141,167,184,196,215,241,229,50,1,1,1,1,1,1,1},
{3,2,1,1,1,96,211,114,150,206,67,23,42,59,88,123,158,165,121,176,236,237,70,1,1,2,1,2,1,2},
{1,1,2,2,4,97,207,149,161,233,114,10,32,47,83,117,146,170,132,173,231,245,83,3,1,3,4,1,1,5},
{2,2,2,1,7,100,214,198,196,246,180,33,46,57,82,115,148,204,196,211,235,240,79,1,1,1,1,5,3,1},
{3,2,1,1,4,96,222,214,232,248,192,50,59,74,97,129,151,213,236,234,231,235,73,5,1,6,1,3,1,1},
{1,1,1,2,1,83,223,199,226,243,167,79,91,100,121,143,158,203,244,233,225,233,60,1,3,1,3,1,2,1},
{1,2,1,3,1,60,220,200,173,181,136,120,126,131,143,158,168,184,212,208,224,229,44,1,1,64,58,2,4,7},
{2,3,1,1,1,30,202,219,185,167,155,159,153,155,162,175,191,192,202,212,236,206,22,19,133,248,59,3,1,3},
{1,2,1,1,2,3,174,226,200,191,182,174,174,174,182,185,191,202,206,218,233,196,90,191,256,148,10,1,1,1},
{1,2,4,1,1,4,99,235,214,204,197,193,193,191,189,200,204,208,217,228,234,216,220,241,146,8,3,2,2,3},
{3,1,1,1,4,1,17,186,231,219,210,202,201,206,208,212,211,221,221,231,231,205,155,67,1,4,1,1,1,1},
{1,5,2,2,4,1,8,34,210,220,229,221,215,220,219,217,219,229,236,219,88,23,5,1,1,1,2,1,1,2},
{1,1,1,1,2,9,1,77,155,186,213,220,229,236,230,229,226,221,229,226,89,1,1,7,1,2,1,1,1,1},
{2,1,5,4,1,1,3,136,222,208,227,256,227,144,143,231,244,227,242,254,143,14,1,1,1,2,1,1,1,1},
{1,3,1,1,8,4,1,3,65,99,115,94,52,7,3,47,92,109,103,57,1,1,10,1,1,1,2,1,1,2}% Yes this percent is suspicious...
}{
\foreach \pixel [count=\x from 0] in \Line {
\pgfmathparse{int(\pixel/256*100)}
\edef\op{\pgfmathresult}
\ifnum\op<20
\fill[black!10] (\x*10pt,-\y*10pt) rectangle ++(10pt, 10pt);
\else
\fill[black!\op] (\x*10pt,-\y*10pt) rectangle ++(10pt,10pt);
\fi
}
}
\end{tikzpicture}
\end{document}