Update app.py

app.py

@@ -188,15 +188,13 @@ def cross_plot(actual, pred):
     a = pd.Series(actual).astype(float)
     p = pd.Series(pred).astype(float)
 
-    # Dynamic extents with a small pad
-    lo = float(np.nanmin([a.min(), p.min()]))
-    hi = float(np.nanmax([a.max(), p.max()]))
-    pad = 0.03 * (hi - lo if hi > lo else 1.0)
-    x0, x1 = lo - pad, hi + pad
+    # Fixed extents + identical tick settings
+    AX_MIN, AX_MAX = 6000, 10000
+    TICK0, DTICK = 6000, 1000
 
     fig = go.Figure()
 
-    # Scatter points
+    # Points
     fig.add_trace(go.Scatter(
         x=a, y=p, mode="markers",
         marker=dict(size=6, color=COLORS["pred"]),
@@ -204,9 +202,9 @@ def cross_plot(actual, pred):
         showlegend=False
     ))
 
-    # 1:1 diagonal
+    # 1:1 reference line (full diagonal)
     fig.add_trace(go.Scatter(
-        x=[x0, x1], y=[x0, x1], mode="lines",
+        x=[AX_MIN, AX_MAX], y=[AX_MIN, AX_MAX], mode="lines",
         line=dict(color=COLORS["ref"], width=1.2, dash="dash"),
         hoverinfo="skip", showlegend=False
     ))
@@ -219,30 +217,32 @@ def cross_plot(actual, pred):
         font=dict(size=FONT_SZ)
     )
 
-    # lock aspect to keep 45° line visually accurate
+    # Make the two axes identical: same range, same ticks, same aspect
     fig.update_xaxes(
         title_text="<b>Actual UCS (psi)</b>",
         title_font=dict(size=18, family="Arial", color="#000"),
-        range=[x0, x1],
-        ticks="outside",
-        tickformat=",.0f",
+        range=[AX_MIN, AX_MAX],
+        tick0=TICK0, dtick=DTICK, tickformat=",.0f", ticks="outside",
         showline=True, linewidth=1.2, linecolor="#444", mirror=True,
         showgrid=True, gridcolor="rgba(0,0,0,0.12)",
-        scaleanchor="y", scaleratio=1,
+        scaleanchor="y", scaleratio=1,  # lock aspect to keep 45° line exact
+        fixedrange=True,                 # keep the range fixed (no zoom/pan)
         automargin=True
     )
     fig.update_yaxes(
         title_text="<b>Predicted UCS (psi)</b>",
         title_font=dict(size=18, family="Arial", color="#000"),
-        range=[x0, x1],
-        ticks="outside",
-        tickformat=",.0f",
+        range=[AX_MIN, AX_MAX],
+        tick0=TICK0, dtick=DTICK, tickformat=",.0f", ticks="outside",
         showline=True, linewidth=1.2, linecolor="#444", mirror=True,
         showgrid=True, gridcolor="rgba(0,0,0,0.12)",
+        fixedrange=True,                 # same fixed range
         automargin=True
     )
+
     return fig
 
+
 # ---------- track_plot ----------
 def track_plot(df, include_actual=True):
     depth_col = next((c for c in df.columns if 'depth' in str(c).lower()), None)