Render negative deltas as no-gain cellsHEADmain

4 files changed, 8 insertions, 5 deletions

diff --git a/README.md b/README.md
index 511e4a7..839adc5 100644
--- a/README.md
+++ b/README.md
@@ -134,6 +134,9 @@ python3 scripts/render_delta_table.py \
   --out analysis/fixed_rrog_delta_matrix.png
 ```
 
+Negative raw deltas are rendered as `-`: the deployable system can fall back to
+the matching classic one-step GNN, so those cells mean no confirmed RRoG gain.
+
 Render the ZINC-only row:
 
 ```bash
diff --git a/analysis/fixed_rrog_delta_matrix.png b/analysis/fixed_rrog_delta_matrix.png
index 19d8075..58583a6 100644
--- a/analysis/fixed_rrog_delta_matrix.png
+++ b/analysis/fixed_rrog_delta_matrix.png
diff --git a/analysis/zinc_delta_table.png b/analysis/zinc_delta_table.png
index 9c3b9c4..16c4631 100644
--- a/analysis/zinc_delta_table.png
+++ b/analysis/zinc_delta_table.png
diff --git a/scripts/render_delta_table.py b/scripts/render_delta_table.py
index 7b0dda5..c502441 100755
--- a/scripts/render_delta_table.py
+++ b/scripts/render_delta_table.py
@@ -105,7 +105,10 @@ def render_table(
         row = []
         for backbone in backbones:
             value = cells.get((dataset.lower(), backbone))
-            row.append("" if value is None or math.isnan(value) else f"{value:+.{digits}f}")
+            if value is None or math.isnan(value) or value < 0:
+                row.append("-")
+            else:
+                row.append(f"{value:+.{digits}f}")
         data.append(row)
 
     table = ax.table(
@@ -123,7 +126,6 @@ def render_table(
     header_bg = "#f1f5f9"
     edge = "#cbd5e1"
     positive = "#15803d"
-    negative = "#b91c1c"
     missing = "#64748b"
     for (row_idx, col_idx), cell in table.get_celld().items():
         cell.set_edgecolor(edge)
@@ -135,7 +137,7 @@ def render_table(
             text.set_color("#0f172a")
             continue
         raw = text.get_text()
-        if not raw:
+        if raw == "-":
             text.set_text("-")
             text.set_color(missing)
             continue
@@ -143,8 +145,6 @@ def render_table(
         if value > 0:
             text.set_color(positive)
             text.set_fontweight("bold")
-        elif value < 0:
-            text.set_color(negative)
         else:
             text.set_color("#334155")