Continuous Symbols

/* Read the data from a file */
Matrix_Read(cat(HostPath(),"Test Data/TestData.txt"),"data");
/* longitude latitude limits of plot */
/* left, right, bottom, top */
Data_Window(-67,-62,41,44.0);
/* position on page of the axis border rectangle */
/* left, right, bottom, top */
Data_Viewport(mm(20),mm(90),mm(190),mm(260));
/* use mercator projection */
Data_Projection("MERCATOR");
/* draw axis, 1 deg labels, 0.5 deg tics, left and bottom edges */
Axis(1,1,0.5,0.5,1,0,1,0,0);
/*------------------------------------------------*/
/* Now plot continuously scaled symbols */
/*------------------------------------------------*/
Character_Height(pts(10));
Draw_Text(mm(32),mm(192),"Continuously Scaled Symbols");
Continuous_Scaling(2,0,mm(1.),mm(5.),0.1,30.,10.,20.,30.);
/* data[;1 2 3] is all rows and columns 1,2 & 3 of the matrix data */
Scaled_Symbols(data[;1 2 3]);
Symbol_Legend(mm(95.),mm(258.));
/* draw a section of the Nova Scotia coastline */
Line_Colour("BLACK");
Overlay_file(mappath("COAST1"));
Overlay_file(mappath("Depthm200"));