diff --git a/inst-not/quantreg/ggplo2-quantreg-rqss.R b/inst-not/quantreg/ggplo2-quantreg-rqss.R
new file mode 100644
index 0000000..8b3cf3d
--- /dev/null
+++ b/inst-not/quantreg/ggplo2-quantreg-rqss.R
@@ -0,0 +1,13 @@
+library(ggplot2)
+
+m <-
+  ggplot(mpg, aes(displ, 1 / hwy)) +
+  geom_point()
+m + stat_quantile()
+
+m + stat_quantile(method = "rqss")
+
+m + stat_quantile(method = "rqss", lambda = 0.1)
+
+sessionInfo()
+
diff --git a/inst-not/quantreg/ggpmisc-quantreg-rqss.R b/inst-not/quantreg/ggpmisc-quantreg-rqss.R
new file mode 100644
index 0000000..8247ca8
--- /dev/null
+++ b/inst-not/quantreg/ggpmisc-quantreg-rqss.R
@@ -0,0 +1,25 @@
+library(ggplot2)
+library(ggpmisc)
+
+p <-
+  ggplot(mpg, aes(displ, 1 / hwy)) +
+  geom_point()
+p + stat_quant_line()
+
+p + stat_quant_line(method = "rqss")
+
+p + stat_quant_line(method = "rqss", lambda = 0.1)
+
+p + stat_quant_band()
+
+p + stat_quant_band(method = "rqss")
+
+p + stat_quant_band(method = "rqss", lambda = 0.1)
+
+p + stat_quant_eq()
+
+p + stat_quant_eq(method = "rqss")
+
+p + stat_quant_eq(method = "rqss", lambda = 0.1)
+
+sessionInfo()
diff --git a/inst-not/quantreg/quantreg-rqss-examples.R b/inst-not/quantreg/quantreg-rqss-examples.R
new file mode 100644
index 0000000..3bc853f
--- /dev/null
+++ b/inst-not/quantreg/quantreg-rqss-examples.R
@@ -0,0 +1,29 @@
+library(quantreg)
+
+n <- 200
+x <- sort(rchisq(n,4))
+z <- x + rnorm(n)
+y <- log(x)+ .1*(log(x))^2 + log(x)*rnorm(n)/4 + z
+plot(x, y-z)
+
+f.N  <- rqss(y ~ qss(x, constraint= "N") + z)
+
+f.I  <- rqss(y ~ qss(x, constraint= "I") + z)
+
+f.CI <- rqss(y ~ qss(x, constraint= "CI") + z)
+
+lines(x[-1], f.N $coef[1] + f.N $coef[-(1:2)])
+
+lines(x[-1], f.I $coef[1] + f.I $coef[-(1:2)], col="blue")
+
+lines(x[-1], f.CI$coef[1] + f.CI$coef[-(1:2)], col="red")
+
+## A bivariate example
+if(requireNamespace("interp")){
+  if(requireNamespace("interp")){
+    data(CobarOre)
+    fCO <- rqss(z ~ qss(cbind(x,y), lambda= .08), data=CobarOre)
+    plot(fCO)
+  }}
+
+sessionInfo()
diff --git a/tests/testthat/test-eq-label-utils.R b/tests/testthat/test-eq-label-utils.R
index 0333c33..a87cdec 100644
--- a/tests/testthat/test-eq-label-utils.R
+++ b/tests/testthat/test-eq-label-utils.R
@@ -58,7 +58,7 @@ test_that("polynomial as character well formatted", {
   expect_equal(poly2character(x = (1:5) * 1e-6, decreasing = TRUE, digits = 3, keep.zeros = TRUE),
                "5.00e-06*x^4 + 4.00e-06*x^3 + 3.00e-06*x^2 + 2.00e-06*x + 1.00e-06")
   expect_equal(poly2character(x = (1:5) * 1e+3, decreasing = TRUE, digits = 3, keep.zeros = TRUE),
-               "5.00e+03*x^4 + 4.00e+03*x^3 + 3.00e+03*x^2 + 2.00e+03*x + 1.000e+03")
+               "5.00e+03*x^4 + 4.00e+03*x^3 + 3.00e+03*x^2 + 2.00e+03*x + 1.00e+03")
   expect_warning(poly2character(x = NA))
   expect_true(is.na(suppressWarnings(poly2character(x = NA))))
   expect_equal(poly2character(x = NULL), character(0))