---
title: "How to use QGIS expressions in qgisprocess?"
author: "Floris Vanderhaeghe & Jannes Muenchow"
date: "Last updated: 2023-08-16"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{How to use QGIS expressions in qgisprocess?}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

```{r, include = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)
can_build <- qgisprocess::has_qgis() &&
  package_version(qgisprocess::qgis_version(full = FALSE)) >= "3.30.0" &&
  requireNamespace("sf", quietly = TRUE)
```

```{r child=if (can_build) file.path(rprojroot::find_root(rprojroot::is_r_package), "man/vignette_childs/_qgis_expressions.Rmd")}
```

```{r eval=!can_build, echo=FALSE, results="asis"}
cat("This vignette has been built in absence of a QGIS installation with version >= 3.30.0, or in absence of the sf package.\n\n")
cat("Read it online at <https://r-spatial.github.io/qgisprocess/articles/qgis_expressions.html>.")
```

