From 20c480788620cf3b6c633b43195b15fd04897e8e Mon Sep 17 00:00:00 2001
From: sophiamersmann <sophia.mersmann1@gmail.com>
Date: Thu, 24 Oct 2024 10:39:16 +0200
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20(line=20chart)=20set=20y-axis=20min?=
 =?UTF-8?q?=20default=20to=200?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 packages/@ourworldindata/grapher/src/axis/AxisConfig.ts      | 1 -
 .../@ourworldindata/grapher/src/lineCharts/LineChart.tsx     | 2 ++
 .../grapher/src/schema/defaultGrapherConfig.ts               | 2 --
 .../grapher/src/schema/grapher-schema.005.yaml               | 5 +++--
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/packages/@ourworldindata/grapher/src/axis/AxisConfig.ts b/packages/@ourworldindata/grapher/src/axis/AxisConfig.ts
index 2226665d24c..f9b8442a86d 100644
--- a/packages/@ourworldindata/grapher/src/axis/AxisConfig.ts
+++ b/packages/@ourworldindata/grapher/src/axis/AxisConfig.ts
@@ -96,7 +96,6 @@ export class AxisConfig
 
         deleteRuntimeAndUnchangedProps(obj, new AxisConfigDefaults())
 
-        if (obj.min === undefined) obj.min = AxisMinMaxValueStr.auto
         if (obj.max === undefined) obj.max = AxisMinMaxValueStr.auto
 
         return obj
diff --git a/packages/@ourworldindata/grapher/src/lineCharts/LineChart.tsx b/packages/@ourworldindata/grapher/src/lineCharts/LineChart.tsx
index 6b6e2b64ce4..9d7ef0b593d 100644
--- a/packages/@ourworldindata/grapher/src/lineCharts/LineChart.tsx
+++ b/packages/@ourworldindata/grapher/src/lineCharts/LineChart.tsx
@@ -1342,6 +1342,8 @@ export class LineChart
                 // horizontal axis to be at the bottom of the chart.
                 // see https://github.com/owid/owid-grapher/pull/975#issuecomment-890798547
                 singleValueAxisPointAlign: AxisAlign.start,
+                // default to a minimum value of 0 if not set
+                min: 0,
                 ...this.manager.yAxisConfig,
             },
             this
diff --git a/packages/@ourworldindata/grapher/src/schema/defaultGrapherConfig.ts b/packages/@ourworldindata/grapher/src/schema/defaultGrapherConfig.ts
index 6497d08f13c..dd0f68334e2 100644
--- a/packages/@ourworldindata/grapher/src/schema/defaultGrapherConfig.ts
+++ b/packages/@ourworldindata/grapher/src/schema/defaultGrapherConfig.ts
@@ -26,7 +26,6 @@ export const defaultGrapherConfig = {
     maxTime: "latest",
     yAxis: {
         removePointsOutsideDomain: false,
-        min: "auto",
         scaleType: "linear",
         max: "auto",
         canChangeScaleType: false,
@@ -66,7 +65,6 @@ export const defaultGrapherConfig = {
     },
     xAxis: {
         removePointsOutsideDomain: false,
-        min: "auto",
         scaleType: "linear",
         max: "auto",
         canChangeScaleType: false,
diff --git a/packages/@ourworldindata/grapher/src/schema/grapher-schema.005.yaml b/packages/@ourworldindata/grapher/src/schema/grapher-schema.005.yaml
index 79ca82b4122..4465a68f6c0 100644
--- a/packages/@ourworldindata/grapher/src/schema/grapher-schema.005.yaml
+++ b/packages/@ourworldindata/grapher/src/schema/grapher-schema.005.yaml
@@ -514,8 +514,9 @@ $defs:
                 type: string
                 description: Axis label
             min:
-                description: Minimum domain value of the axis. Inferred from data if set to "auto".
-                default: auto
+                description: |
+                    Minimum domain value of the axis. Inferred from data if set to "auto".
+                    Usually defaults to "auto", but defaults to 0 for line charts on the y-axis.
                 oneOf:
                     - type: number
                     - type: string