From d468a8223ed6391936c32a2ff782afd7ce869d67 Mon Sep 17 00:00:00 2001
From: Dongdong Tian <seisman.info@gmail.com>
Date: Thu, 26 Oct 2023 22:45:18 +0800
Subject: [PATCH] Figure.savefig: Support PPM (.ppm) format

---
 pygmt/figure.py            | 2 ++
 pygmt/tests/test_figure.py | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/pygmt/figure.py b/pygmt/figure.py
index e5b5cbf7184..84470c43827 100644
--- a/pygmt/figure.py
+++ b/pygmt/figure.py
@@ -263,6 +263,7 @@ def savefig(
         - JPEG (``.jpg`` or ``.jpeg``)
         - PDF (``.pdf``)
         - BMP (``.bmp``)
+        - PPM (``.ppm``)
         - TIFF (``.tif``)
         - GeoTIFF (``.tiff``)
         - EPS (``.eps``)
@@ -305,6 +306,7 @@ def savefig(
             "pdf": "f",
             "jpg": "j",
             "bmp": "b",
+            "ppm": "m",
             "eps": "e",
             "tif": "t",
             "tiff": None,  # GeoTIFF doesn't need the -T option
diff --git a/pygmt/tests/test_figure.py b/pygmt/tests/test_figure.py
index 4969aad0fb0..dd52462f677 100644
--- a/pygmt/tests/test_figure.py
+++ b/pygmt/tests/test_figure.py
@@ -83,7 +83,7 @@ def test_figure_savefig_exists():
     fig = Figure()
     fig.basemap(region="10/70/-300/800", projection="X3i/5i", frame="af")
     prefix = "test_figure_savefig_exists"
-    for fmt in "png pdf jpg jpeg bmp eps tif PNG JPG JPEG Png".split():
+    for fmt in "png pdf jpg jpeg bmp ppm eps tif PNG JPG JPEG Png".split():
         fname = ".".join([prefix, fmt])
         fig.savefig(fname)