minor improvements

apps/coin_info/README.md

@@ -7,6 +7,7 @@ Crypto-Coins Infos with the help of the Binance and CoinStats API
 - Is a clock_info module and an app
 - I use Pebble++ watch to show a bigger size of clock_info
 - I use a wider, more readable font for Pebble++
+- Upload data via App-Loader interface first!!!
 
 ![Screenshot Click_Info 01](screenshots/20250316_01.jpg)
 ![Screenshot Click_Info 02](screenshots/20250316_02.jpg)

apps/coin_info/app.js

@@ -9,6 +9,7 @@ var ticker = 0;
 var currLoadMsg = "...";
 var timePeriod = "24h";
 var tknChrtData = [5,6,5,6,5,6,5,6,5,6,5,6,5,6,];
+var optSpacing = {};
 
 
 //
@@ -100,7 +101,7 @@ function getChart(period) {
             // logFile.write("Chart data:" + JSON.stringify(tknChrtData));
 
             // just not readable
-            // const oSpcOjb = ciLib.calculateOptimalYAxisSpacing(tknChrtData);
+            optSpacing = ciLib.calculateOptimalYAxisSpacing(tknChrtData);
             // logFile.write("Y-Axis:" + JSON.stringify(oSpcOjb));
             // gridYValue = oSpcOjb.interval;
 

apps/coin_info/lib.js

@@ -99,7 +99,9 @@ exports.calculateOptimalYAxisSpacing = function(data) {
     let adjustedMin = Math.floor(minY / roundedInterval) * roundedInterval;
     let adjustedMax = Math.ceil(maxY / roundedInterval) * roundedInterval;
 
-    return { min: adjustedMin, max: adjustedMax, interval: roundedInterval };
+    let first = data[0];
+    let last = data[data.length - 1];
+    return { min: adjustedMin, max: adjustedMax, interval: roundedInterval, first: first, last: last };
 }