assert_r_has_jpeg_capability {assertive.reflection} | R Documentation |
Check to see if R has a specific capability.
assert_r_has_jpeg_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_png_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_tiff_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_tcltk_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_x11_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_aqua_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_http_ftp_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_sockets_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_libxml_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_fifo_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_cledit_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_iconv_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_nls_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_profmem_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_cairo_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_icu_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_long_double_capability(severity = getOption("assertive.severity", "stop")) assert_r_has_libcurl_capability(severity = getOption("assertive.severity", "stop")) r_has_jpeg_capability() r_has_png_capability() r_has_tiff_capability() r_has_tcltk_capability() r_has_x11_capability() r_has_aqua_capability() r_has_http_ftp_capability() r_has_sockets_capability() r_has_libxml_capability() r_has_fifo_capability() r_has_cledit_capability() r_has_iconv_capability() r_has_nls_capability() r_has_profmem_capability() r_has_cairo_capability() r_has_icu_capability() r_has_long_double_capability() r_has_libcurl_capability()
severity |
How severe should the consequences of the assertion be?
Either |
The is_*
functions return TRUE
if R has the capability
and FALSE
(with a cause) otherwise.
The assert_*
functions return nothing but throw an error if the
corresponding is_*
function returns FALSE
.
## Not run: if(r_has_png_capability()) { png("test.png") with(cars, plot(speed, dist)) dev.off() } else { pdf("test.pdf") with(cars, plot(speed, dist)) dev.off() } ## End(Not run)