Créer ses propres cartographies avec l'opendata rennais : Différence entre versions

(Voir les modifications en cours par rapport à la version publiée)
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|Step_Title=Allez dans le CARTOGRAPHE
 
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|Step_Content=Deux fonctionnalités principales sont disponibles pour générer des contenus à publier/partager à partir des informations contenues dans le portail : LE CARTOGRAPHE et LES GRAPHIQUES.
 
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* Cliquez sur "CARTOGRAPHE" et vous pour entrer en mode de création de cartographie.
 
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* L'écran est maintenant essentiellement séparé entre une partie fond de carte, centré sur Rennes, et une colonne de droite qui va permettre de sélectionner ce que nous voulons afficher dans la carte.
 
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Version du 11 décembre 2019 à 12:02

Comment créer gratuitement et en quelques clics, une cartographie utilisant l'opendata rennais, pour vos présentations, sites internet fixe et mobiles, etc.

Auteur avatarhaubin | Dernière modification 6/04/2021 par Haubin en cours de rédaction

Difficulté
Facile
Durée
1 heure(s)
Public
Professionnels, Grand public, Médiateurs, Autres
Licence
CC-BY
Comment créer gratuitement et en quelques clics, une cartographie utilisant l'opendata rennais, pour vos présentations, sites internet fixe et mobiles, etc.
Difficulté
Facile
Durée
1 heure(s)
Public
Professionnels, Grand public, Médiateurs, Autres
Licence
CC-BY
<languages />

Introduction

Le portail opendata de Rennes Métropole vous permet de créer en quelques clics des cartographies affichables sur les sites internet fixes et mobiles, en superposant des couches d'information locales multiples. C'est un outil puissant pour aggréger, publier, partager de l'information locale !

Nous allons par exemple ici créer en quelques clics une cartographie des Espaces Publics Numériques de la ville de Rennes :-)

Le seul pré-requis est de s'être créé un compte sur Rennes Métropole en accès libre, le portail opendata de Rennes Métropole.

Tutoriels prérequis

Étape 1 - Connectez-vous sur Rennes Métropole en accès libre

  • Allez sur https://data.rennesmetropole.fr/, en haut à droite de la page, cliquez sur "connexion".
  • Remplissez votre identifiant et votre mot de passe.
  • Vérifiez que votre nom d'utilisateur apparaît bien en haut à droite de la page.
  • Vous êtes désormais connecté(e) et pouvez créer des cartographies, et les sauvegarder !


Étape 2 - Allez dans le CARTOGRAPHE

Deux fonctionnalités principales sont disponibles pour générer des contenus à publier/partager à partir des informations contenues dans le portail : LE CARTOGRAPHE et LES GRAPHIQUES.


  • Cliquez sur "CARTOGRAPHE" et vous pour entrer en mode de création de cartographie.
  • L'écran est maintenant essentiellement séparé entre une partie fond de carte, centré sur Rennes, et une colonne de droite qui va permettre de sélectionner ce que nous voulons afficher dans la carte.



Étape 3 - Donnez un nom à votre carte, et réfléchissez avant d'aller plus loin

La partie la plus difficile va consister à bien définir dans votre esprit :


  • Ce que vous voulez afficher sur la carte
  • Pour qui
  • Ce que vous envisagez comme support(s) de publication (par exemple un simple lien vers une carte relayé via un réseau social, ou alors une publication sur votre site internet).

Et encore plus difficile, comme vous allez utiliser des informations saisies et agrégées par des tiers pour d'autres besoins que les vôtres (services publics, observatoires, applications mobiles), il va falloir chercher dans ce portail où se trouvent les informations recherchées, les trouver, en vous mettant à la place des gestionnaires de données... Ensuite seulement vous pourrez filtrer les informations cibles et générer votre cartographie...

Heureusement tout peut se faire en ligne dans la page cartographe, et vous pouvez faire des essais, modifier, effacer...




Étape 4 - Cherchez le meilleur jeu de données dans le portail

C'est la partie la plus délicate. Elle peut prendre beaucoup de temps mais le jeu en vaut la chandelle. Les informations sont rassemblées dans des "jeux de données". Il faut raisonner en deux étapes essentielles : identifier le meilleur jeu de données pour avoir les informations que l'on cherche, puis on pourra sélectionner ces données en utilisant un filtre pour les afficher.


Il est possible d'utiliser tout jeu de données proposé, et les filtres correspondent aux colonnes des tableaux correspondant aux données.


  • Astuce 1 : si vous voulez afficher une cartographie de lieux publics, sachez que Rennes Métropole et ses partenaires maintiennent un jeu de données énorme régulièrement mis à jour. Il s'agit de "Sites et organismes".
  • Astuce 2 : Chaque jeu de donnée est indiqué avec un descriptif, des remarques, et un nombre d'enregistrements. Il est malin de chercher le jeu de données mis à jour le plus récemment, et le plus complet.
  • Pour commencer la recherche, cliquez sur "Ajouter un jeu de données" en colonne de droite, ce qui va ouvrir l'outil de recherche de données à gauche de l'écran.
  • Tapez "organismes" dans le champ de recherche
  • La colonne de gauche vous présente les jeux de données correspondants
  • Vous pouvez déplier des informations dans la liste des jeux de données en cliquant à gauche du nom du jeu de données (plier/déplier)
  • En cliquant dans la colonne de gauche, vous pouvez affiner votre sélection.
  • REPEREZ (et NE CLIQUEZ PAS SELECTIONNER) le jeu de données avec le plus d'enregistrements, le plus récent. Par exemple celui qui contient ici 5181 enregistrements, dont le titre commence par "Organismes de la base de données "Sites et Organismes" sur le territoire...".

Nota : ici la lecture des informations sur les jeux de données nous a évité de prendre "base équipements et organismes Vivre à Rennes" qui est indiqué comme n'étant plus mis à jour...

Commentaires

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