This dataset contains the material of a user survey presented in the paper " More is Less - Adding Zoom Levels in Multi-Scale Maps to Reduce the Need for Zooming Interactions". There are several files in the dataset: the Tiles.zip contained all the tiles of the 5 multi-scale maps used in the experiments. The route.shp shapefiles contains the routes the participants were asked to follow during each trial instructions.doc is the reproduction of the instructions given to each participant prior to the survey. The document is in French. FormulaireConsentement.docx is the consent form the participant had to sign before the survey. It is also in French. script.r contains the R scripts run to analyse the results. qualitative_results.xlsx contains the qualitative information collected during the survey. Most of the information stored in the file is in French. quantitative_results.xlsx contains the quantitative results (completion time, nb of errors, etc.) for each participant and each trial.