The Flickr Tourism Indicator 2011 is built on data extracted through the Flickr API, which allowed us to obtained
more than 192,800 photos geotagged in Barcelona and 142,600 geotagged in Madrid, between January 1st 2011 and December 31st 2011. We have discarded those whose owner’s origin is unknown (not indicated in his/her Flickr profile) and those who reside in the areas of Barcelona and Madrid, in order to analyze just those photos taken by tourists. After that refining process we kept a little bit more than 47,800 photos in the case of Barcelona and 25,100 in the case of Madrid.
However, with this indicator we wanted to analyze the behavior and occupation of the city by tourists, therefore we discarded to analyze photos but users behind this uploaded photos. Finally, we obtained that for Barcelona we had a sample of 2,858 tourists that took photos in Barcelona during 2011. In the case of Madrid, the figure was 1,962 tourists.
In order to analyze where tourists mostly concentrate and how they move, we used the census sections of Madrid and Barcelona, in order to calculate the number of tourists that were in that public space anytime during 2011.
We calculated the density of tourists on each census section in absolute terms, but also in terms of tourists per km2 and tourists per 1,000 population of each section, thanks to data extracted from OpenData Bcn and the Statistics Institute of Madrid. Finally, we drew a total of 31 polygons for Madrid and 29 for Barcelona, those areas considered as the top tourist attractions in both cities to see specific behavior in these areas. We have used the
Geonames’ API to normalize geographic data on countries of origin. We have also used
CartoDB as our geospatial database for this project.
Given the specific nature of the sample, it is important to highlight that conclusions that can be drawn are conditional on the usual profile of a consumer who makes intense use of cloud services and web 2.0, ie there is a profile of tourists visiting Barcelona or Madrid that cannot be represented in this analysis. Therefore, this is a study that focuses exclusively on Internet users tourists, although it has to be said, they are becoming more numerous and therefore it is gradually a more relevant sample for the whole tourism industry in Barcelona or Madrid.
Statistics information:
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Universe: tourists in Barcelona (7,450,000 estimated for 2011 according to Turisme de Barcelona) and tourists in Madrid (10,000,000
estimated for 2011 according to Turismo de la Comunidad de Madrid).
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Sample: 2,858 Flickr accounts (tourists) for Barcelona and 1,962 for Madrid between January 1st 2011 and December 31st 2011.
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Margin of error (with p=q=50% and a confidence interval of 95%): Barcelona: 1.8%; Madrid: 2.2%
Data sources: Flickr, OpenData BCN, Instituto de Estadística de la Comunidad de Madrid
NOTE: this sample is based on single unique users, whilst the universe shows total number of tourists. We have to take into account that for each
pic uploaded there is usually more than one tourist behind.