Simplify expression

2018-01-31 17:54:40 +01:00
parent d1fcd797a3
commit 7db0744f67
1 changed files with 1 additions and 3 deletions
@@ -132,10 +132,8 @@ const dimensionDefs = ctx => {
 // This is defined by the ctx.res parameter, which is the number of grid cells per tile linear dimension
 // (i.e. each tile is divided into ctx.res*ctx.res cells).
 const gridResolution = ctx => {
-    const factor = 256*0.00028/ctx.res;
    const minimum_resolution = 2*Math.PI*6378137/Math.pow(2,38);
-    let minimum_scale_denominator = minimum_resolution/factor;
-    return `(${factor}*GREATEST(!scale_denominator!,${minimum_scale_denominator}))::double precision`;
+    return `GREATEST(${256*0.00028/ctx.res}*!scale_denominator!, ${minimum_resolution})::double precision`;
 };

 // Notes: