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-rw-r--r--inst/examples/caffeine.R4
-rw-r--r--inst/examples/octanol.R4
2 files changed, 6 insertions, 2 deletions
diff --git a/inst/examples/caffeine.R b/inst/examples/caffeine.R
index 29a7e0b..f5711f3 100644
--- a/inst/examples/caffeine.R
+++ b/inst/examples/caffeine.R
@@ -1,3 +1,5 @@
caffeine <- chent$new("caffeine")
print(caffeine)
-plot(caffeine)
+if (requireNamespace("grConvert")) {
+ plot(caffeine)
+}
diff --git a/inst/examples/octanol.R b/inst/examples/octanol.R
index 3e42c38..b13d9ce 100644
--- a/inst/examples/octanol.R
+++ b/inst/examples/octanol.R
@@ -1,3 +1,5 @@
oct <- chent$new("1-octanol", smiles = "CCCCCCCCO")
print(oct)
-plot(oct)
+if (requireNamespace("grConvert")) {
+ plot(oct)
+}

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