Fix WithKeyPoints for f32 / f64 ranges

plotters/src/coord/ranged1d/types/numeric.rs

@@ -1,10 +1,10 @@
 use std::convert::TryFrom;
 use std::ops::Range;
 
-use crate::coord::ranged1d::{
+use crate::coord::{combinators::WithKeyPoints, ranged1d::{
     AsRangedCoord, DefaultFormatting, DiscreteRanged, KeyPointHint, NoDefaultFormatting, Ranged,
     ReversibleRanged, ValueFormatter,
-};
+}};
 
 macro_rules! impl_discrete_trait {
     ($name:ident) => {
@@ -26,7 +26,7 @@
             }
 
             fn from_index(&self, index: usize) -> Option<Self::ValueType> {
                 if let Ok(index) = Self::ValueType::try_from(index) {
                     return Some(self.0 + index);
                 }
                 None
@@ -268,6 +268,17 @@
         .print(*value as f64)
     }
 }
+impl ValueFormatter<f32> for WithKeyPoints<RangedCoordf32> {
+    fn format(value: &f32) -> String {
+        crate::data::float::FloatPrettyPrinter {
+            allow_scientific: false,
+            min_decimal: 1,
+            max_decimal: 5,
+        }
+        .print(*value as f64)
+    }
+}
+
 make_numeric_coord!(
     f64,
     RangedCoordf64,
@@ -286,6 +297,16 @@
         .print(*value)
     }
 }
+impl ValueFormatter<f64> for WithKeyPoints<RangedCoordf64> {
+    fn format(value: &f64) -> String {
+        crate::data::float::FloatPrettyPrinter {
+            allow_scientific: false,
+            min_decimal: 1,
+            max_decimal: 5,
+        }
+        .print(*value)
+    }
+}
 make_numeric_coord!(
     u32,
     RangedCoordu32,