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-rw-r--r--R/plot.mkinfit.R3
1 files changed, 2 insertions, 1 deletions
diff --git a/R/plot.mkinfit.R b/R/plot.mkinfit.R
index 59ef861..41b4cb3 100644
--- a/R/plot.mkinfit.R
+++ b/R/plot.mkinfit.R
@@ -20,7 +20,8 @@
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>
-utils::globalVariables(c("type", "variable", "observed"))
+if(getRversion() >= '2.15.1') utils::globalVariables(c("type", "variable", "observed"))
+
plot.mkinfit <- function(x, fit = x,
xlab = "Time", ylab = "Observed",
xlim = range(fit$data$time), ylim = c(0, max(fit$data$observed, na.rm = TRUE)),

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