Labeling Bubble maps in Arcmap 10.2 Desktop

Task
- To create a Bubble map of various points and their PH values using graduated symbol sizes.
-Labeling the Point features with their PH value.

FOR SAMPLE DATA CLICK THIS LINK BELOW:
https://www.dropbox.com/s/iaev3uyo7uhgwzx/Points.csv?dl=0
(kindly attribute the production of this data to www.mapsnigeriainitiative.wordpress.com)


Let us have a look at our dataset. In the Table of Contents, we have a Point feature layer which has on its attribute table a field containing the PH values of the different points. The goal here is to use graduated symbol sizes to create a Bubble map with the values in the attribute field –‘PH’.


Right Click on the Point feature layer  > Properties.


In the Layer Properties window, Click on the tab- Symbology (red boxed).
Then since we are dealing with quantitative data, under the features, click on Quantities (red box 2).


1) Select Graduated symbols under quantities (2) In the Value option, select the attribute field of interest- PH (3) Define the number of classes the data will be classified into. (4) Define the range of the symbol size.


A Bubble map is created in the screenshot below. Notice that the symbol sizes are graduated according to increasing value of PH.


Labeling
The goal will be to label the point features with the PH values displayed right inside the marker.
Right Click the Point feature layer and go to Properties.


Click on the Labels tab. Check the box titled ‘Label features in this layer’. Select the attribute field whose values will be used to label the features. Choose font and font size. Next Click on Placement Properties –see cursor arrow position.


In this window-Placement Properties- Select the option in the red box. Click Ok


Next in the Label window, Click on the Label Styles tab. The Label Style Selector window will open. Select a style and Click Ok.


The labels are placed inside the symbols here in the screenshot below.

Using the CartoDb Map layer wizard to generate Intensity and Heat maps

The Map layer wizard in CartoDB is a very useful tool for creating different types of feature maps. In this post, we will try to simplify the process of using point data to create heat and Intensity map using CartoDB.

Procedure
- Our Map view shows dataset comprising Point features that represent schools.


Click on the Map Layer wizard icon (red boxed) and Choose HEATMAP. Select the opacity, resolution and other parameters.


The results of the demo version at zoom level 10 show the highest intensity of the points to be in the Central area of the map.


The results of the Demo at a higher zoom level of 11 also shows a higher concentration of schools in the central area of the map.


Next, the demo will use the intensity tool to compare to the result of the heat map.
Scroll down the Map layer wizard and Click on the INTENSITY.


The results of the intensity map at zoom level 10 show more concentration of points in the central part of the map.


In these short simple steps, CartoDB Map layer wizard has generated heat and intensity maps for a Point map.

Creating and publishing simple web maps using Microsoft Bing maps

Things to note
- To have access to Microsoft Bing maps, user should have a Microsoft user account or Hotmail account.
-  Bing maps is the Microsoft equivalent of Google maps engine.
- To practice along, create a Microsoft or Hotmail account if you did not have one previously.

Task
To create and publish to the web a simple map from dataset captured by the User.

Procedure
Sign into Bing maps with Microsoft or Hotmail account username and password.  Click My places (red boxed) and a My places editor window will pop up (green box).


Select a file to import by clicking on browse. A list is similar to a working folder. Similar layers can be imported into the same List.

For the demo, the polygon layer called BufferDam2 is imported in. This message appears when the import is successful.


The imported file is seen as a blue polygon (red boxed) and is named Placemark1 by default.


To change the base map to an imagery, Click on dropdown button beside Bird’s eye (red boxed)


Viola! The base map is now an imagery and the imported layer can be seen clearly now.


Click on the feature and an Info-window will pop up. Click on Edit in the Info-window.


Edit pushpin properties box opens. Here changes can be made and even images added.


For the demo, see the result of the editing done on the pop-up window.


Other Options are to click on Actions > Export > Select KML, GPX or even GeoRSS.


To Publish the map online, Click on Share (red boxed).


The Share this map window, user has options –LINK and EMBED IN A WEBPAGE. For the demo, we select the EMBED IN A WEBPAGE. Select Customize and preview to work on the map.


Here MAP SIZE, MAP OPTIONS, MAP STYLES and MAP LINKS can be customized to suit the webpage. For the demo, Large size is selected and Draggable map is selected.


For MAP STYLES- Aerial with labels was selected, and all options under MAP LINKS checked.


Click on the Generate code (red boxed) and a html code is generated. Copy the code.


Paste the code into the HTML code for the web page.


and here is the Bing map embedded as a web map on the webpage.