Updating URL of paper

README.Rmd

@@ -84,6 +84,6 @@ psm_plot(output_psm_demo) +
 
 ## References 
 
-Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) -- A new approach to study consumer perception of price" *Proceedings of the ESOMAR Congress*, 139--167. Online available at [the ESOMAR website](https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/).
+Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) -- A new approach to study consumer perception of price" *Proceedings of the ESOMAR Congress*, 139--167. Online available at [the ESOMAR website](https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/).
 
 Newton, D, Miller, J, Smith, P, (1993) "A market acceptance extension to traditional price sensitivity measurement" *Proceedings of the American Marketing Association Advanced Research Techniques Forum*.

README.md

@@ -99,7 +99,7 @@ psm_plot(output_psm_demo) +
 Van Westendorp, P (1976) “NSS-Price Sensitivity Meter (PSM) – A new
 approach to study consumer perception of price” *Proceedings of the
 ESOMAR Congress*, 139–167. Online available at [the ESOMAR
-website](https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/).
+website](https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/).
 
 Newton, D, Miller, J, Smith, P, (1993) “A market acceptance extension to
 traditional price sensitivity measurement” *Proceedings of the American

man/pricesensitivitymeter.rd

@@ -27,7 +27,7 @@ Max Alletsee \email{max.alletsee@gmail.com}
   Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) --
   A new approach to study consumer perception of price"
   \emph{Proceedings of the 29th ESOMAR Congress}, 139--167. Online
-  available at \url{https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
+  available at \url{https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
 
   Newton, D, Miller, J, Smith, P, (1993) "A market acceptance
   extension to traditional price sensitivity measurement"

man/psm-class.Rd

@@ -56,7 +56,7 @@ showClass("psm")
   Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) --
   A new approach to study consumer perception of price"
   \emph{Proceedings of the 29th ESOMAR Congress}, 139--167. Online
-  available at \url{https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
+  available at \url{https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
 
   Newton, D, Miller, J, Smith, P, (1993) "A market acceptance
   extension to traditional price sensitivity measurement"

man/psm_analysis.rd

@@ -295,7 +295,7 @@ The function output consists of the following elements:
   Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) --
   A new approach to study consumer perception of price"
   \emph{Proceedings of the ESOMAR 29th Congress}, 139--167. Online
-  available at \url{https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
+  available at \url{https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
 
   Newton, D, Miller, J, Smith, P, (1993) "A market acceptance
   extension to traditional price sensitivity measurement"

man/psm_analysis_weighted.rd

@@ -180,7 +180,7 @@ The function output consists of the following elements:
   Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) --
   A new approach to study consumer perception of price"
   \emph{Proceedings of the ESOMAR 29th Congress}, 139--167. Online
-  available at \url{https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
+  available at \url{https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
 
   Newton, D, Miller, J, Smith, P, (1993) "A market acceptance
   extension to traditional price sensitivity measurement"

man/psm_plot.rd

@@ -102,7 +102,7 @@ The function output is a ggplot2 object.
   Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) --
   A new approach to study consumer perception of price"
   \emph{Proceedings of the ESOMAR 29th Congress}, 139--167. Online
-  available at \url{https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
+  available at \url{https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
 }
 
 \seealso{

man/summary.psm.Rd

@@ -31,7 +31,7 @@ The generic \code{\link{summary}} function.
   Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) --
   A new approach to study consumer perception of price"
   \emph{Proceedings of the 29th ESOMAR Congress}, 139--167. Online
-  available at \url{https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
+  available at \url{https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/}.
 
   Newton, D, Miller, J, Smith, P, (1993) "A market acceptance
   extension to traditional price sensitivity measurement"

vignettes/visualizing-psm-results.Rmd

@@ -17,7 +17,7 @@ knitr::opts_chunk$set(
 )
 ```
 
-The interpretation of the Price Sensitivity Meter analysis in its original publication^[Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) -- A new approach to study consumer perception of price" *Proceedings of the ESOMAR Congress*, 139--167. Online available at [the ESOMAR website](https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/).] focuses on a graphical inspection of the results. All relevant price points are defined by the intersection of two distribution functions, which are identified by visualizing the results. Even if this package provides a summary of the main results, most users will probably also be interested in visualizing them.
+The interpretation of the Price Sensitivity Meter analysis in its original publication^[Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) -- A new approach to study consumer perception of price" *Proceedings of the ESOMAR Congress*, 139--167. Online available at [the ESOMAR website](https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/).] focuses on a graphical inspection of the results. All relevant price points are defined by the intersection of two distribution functions, which are identified by visualizing the results. Even if this package provides a summary of the main results, most users will probably also be interested in visualizing them.
 
 This vignette provides a short overview of efficient ways to provide visualizations of the results, both using R's base graphics as well as the *ggplot2* package. The plots are designed to show all main outcomes and can serve as a reference visualization, which may be reused for the purpose of a particular project.
 
@@ -56,7 +56,7 @@ output_psm <- psm_analysis(toocheap = "toocheap",
 
 ## Using the Built-In Function
 
-As of version v1.2, the package includes a built-in function `psm_plot()` that creates the "standard" Price Sensitivity Meter plot as known in the literature^[See for instance figure 5 in the appendix of the original publication: Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) -- A new approach to study consumer perception of price" *Proceedings of the ESOMAR Congress*, 139--167. Online available at [the ESOMAR website](https://www.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/).] The `psm_plot()` function uses the object that is returned by `psm_analysis()` as the main input and has several plotting parameters that mainly can be activated and deactivated via TRUE/FALSE.
+As of version v1.2, the package includes a built-in function `psm_plot()` that creates the "standard" Price Sensitivity Meter plot as known in the literature^[See for instance figure 5 in the appendix of the original publication: Van Westendorp, P (1976) "NSS-Price Sensitivity Meter (PSM) -- A new approach to study consumer perception of price" *Proceedings of the ESOMAR Congress*, 139--167. Online available at [the ESOMAR website](https://archive.researchworld.com/a-new-approach-to-study-consumer-perception-of-price/).] The `psm_plot()` function uses the object that is returned by `psm_analysis()` as the main input and has several plotting parameters that mainly can be activated and deactivated via TRUE/FALSE.
 
 Below is a simple example of the default plot returned by `psm_plot()`. It is built using `ggplot2` package and can be customized further with `ggplot2`'s plotting framework - in the example below, we simply add a different theme.