`"wave"` Pattern Not Rendering As Expected

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Bug description

Thank you for using this awesome package! I'm running into an issue with the "wave" pattern—it doesn't seem to be working as expected. You can reproduce this with the code snippet below, which was adapted from the package documentation. The same issue appears in the example shown there.

Minimal, reproducible example

library(ggplot2)
library(ggpattern)

df <- data.frame(trt = c("a", "b", "c"), outcome = c(2.3, 1.9, 3.2))

ggplot(df, aes(trt, outcome)) +
  geom_col_pattern(aes(fill=trt, pattern=trt, pattern_type=trt),colour='black') + 
  theme_bw() +
  labs(title = "Use 'stripe' and 'wave' patterns") + 
  theme(legend.key.size = unit(1.5, 'cm')) +
  scale_pattern_manual(values=c('stripe', 'wave', 'wave')) +
  scale_pattern_type_manual(values=c(NA, 'triangle', 'sine'))

Session info

xfun::session_info("ggpattern")

#> R version 4.5.0 (2025-04-11)
#> Platform: x86_64-pc-linux-gnu
#> Running under: Ubuntu 24.04.2 LTS
#> 
#> Locale:
#>   LC_CTYPE=pt_BR.UTF-8       LC_NUMERIC=C              
#>   LC_TIME=pt_BR.UTF-8        LC_COLLATE=en_US.UTF-8    
#>   LC_MONETARY=pt_BR.UTF-8    LC_MESSAGES=en_US.UTF-8   
#>   LC_PAPER=pt_BR.UTF-8       LC_NAME=C                 
#>   LC_ADDRESS=C               LC_TELEPHONE=C            
#>   LC_MEASUREMENT=pt_BR.UTF-8 LC_IDENTIFICATION=C       
#> 
#> Package version:
#>   cachem_1.1.0       class_7.3.23       classInt_0.4.11    cli_3.6.5         
#>   DBI_1.2.3          e1071_1.7.16       fansi_1.0.6        farver_2.1.2      
#>   fastmap_1.2.0      ggpattern_1.1.4    ggplot2_3.5.2      glue_1.8.0        
#>   graphics_4.5.0     grDevices_4.5.0    grid_4.5.0         gridpattern_1.3.1 
#>   gtable_0.3.6       isoband_0.2.7      KernSmooth_2.23.26 labeling_0.4.3    
#>   lattice_0.22.7     lifecycle_1.0.4    magrittr_2.0.3     MASS_7.3.65       
#>   Matrix_1.7.3       memoise_2.0.1      methods_4.5.0      mgcv_1.9.3        
#>   nlme_3.1.168       pillar_1.10.2      pkgconfig_2.0.3    png_0.1.8         
#>   proxy_0.4.27       R6_2.6.1           RColorBrewer_1.1.3 Rcpp_1.0.14       
#>   rlang_1.1.6        s2_1.1.8           scales_1.4.0       sf_1.0.20         
#>   splines_4.5.0      stats_4.5.0        tibble_3.2.1       tools_4.5.0       
#>   units_0.8.7        utf8_1.2.5         utils_4.5.0        vctrs_0.6.5       
#>   viridisLite_0.4.2  withr_3.0.2        wk_0.9.4

Troubleshooting the issue

The issue with the "wave" pattern not rendering as expected can be caused by several factors. Let's break down the code and identify the potential problems.

Pattern type

The pattern_type aesthetic is set to trt, which is a categorical variable. However, the scale_pattern_type_manual function is used to set the pattern type for each group. This might cause the issue, as the pattern type is not being applied correctly.

Pattern values

The scale_pattern_manual function is used to set the pattern values for each group. However, the values are set to c('stripe', 'wave', 'wave'), which might not be the correct order.

Session info

The session info shows that the package versions are up-to-date. However, there might be other issues with the package or the R environment that are causing the problem.

Possible solutions

Based on the analysis, here are some possible solutions to the issue:

1. Update the package

Make sure that the ggpattern package is up-to-date by running update.packages().

2. Check the pattern type

Check that the pattern_type aesthetic is set correctly and that the scale_pattern_type_manual function is used correctly.

3. Check the pattern values

Check that the scale_pattern_manual function is used correctly and that the pattern values are set in the correct order.

4. Check the session info

Check that the session info is correct and that there are no other issues with the package or the R environment.

Conclusion

The issue with the "wave" pattern not rendering as expected can be caused by several factors, including the pattern type, pattern values, and session info. By analyzing the code and identifying the potential problems, we can troubleshoot the issue and find a solution. In this case, updating the package, checking the pattern type, checking the pattern values, and checking the session info might solve the problem.

Additional resources

For more information on the ggpattern package and its usage, please refer to the package documentation and the following resources:

Acknowledgments

Q: What is the "wave" pattern issue in ggpattern?

A: The "wave" pattern issue in ggpattern refers to a problem where the "wave" pattern is not rendering as expected in a ggplot2 plot. This can be caused by several factors, including the pattern type, pattern values, and session info.

Q: What are the possible causes of the "wave" pattern issue?

A: The possible causes of the "wave" pattern issue include:

  • Pattern type: The pattern_type aesthetic is set to trt, which is a categorical variable. However, the scale_pattern_type_manual function is used to set the pattern type for each group.
  • Pattern values: The scale_pattern_manual function is used to set the pattern values for each group. However, the values are set to c('stripe', 'wave', 'wave'), which might not be the correct order.
  • Session info: The session info shows that the package versions are up-to-date. However, there might be other issues with the package or the R environment that are causing the problem.

Q: How can I troubleshoot the "wave" pattern issue?

A: To troubleshoot the "wave" pattern issue, you can follow these steps:

  1. Update the package: Make sure that the ggpattern package is up-to-date by running update.packages().
  2. Check the pattern type: Check that the pattern_type aesthetic is set correctly and that the scale_pattern_type_manual function is used correctly.
  3. Check the pattern values: Check that the scale_pattern_manual function is used correctly and that the pattern values are set in the correct order.
  4. Check the session info: Check that the session info is correct and that there are no other issues with the package or the R environment.

Q: What are some common mistakes that can cause the "wave" pattern issue?

A: Some common mistakes that can cause the "wave" pattern issue include:

  • Incorrect pattern type: Using the wrong pattern type or not setting the pattern type correctly.
  • Incorrect pattern values: Using the wrong pattern values or not setting the pattern values correctly.
  • Incorrect session info: Having an incorrect session info or not updating the package correctly.

Q: How can I prevent the "wave" pattern issue in the future?

A: To prevent the "wave" pattern issue in the future, you can follow these best practices:

  • Update the package regularly: Make sure to update the ggpattern package regularly to ensure that you have the latest version.
  • Check the pattern type and values: Double-check that the pattern_type aesthetic is set correctly and that the scale_pattern_type_manual function is used correctly.
  • Check the session info: Make sure that the session info is correct and that there are no other issues with the package or the R environment.

Q: Where can I find more information on the "wave" pattern issue?

A: For more on the "wave" pattern issue, you can refer to the following resources:

Conclusion

The "wave" pattern issue in ggpattern can be caused by several factors, including the pattern type, pattern values, and session info. By following the troubleshooting steps and best practices outlined in this article, you can prevent the "wave" pattern issue and create high-quality plots with ggpattern.