mapstatic | Static map generator | Map library
kandi X-RAY | mapstatic Summary
kandi X-RAY | mapstatic Summary
A CLI and Ruby Gem for generating static maps from map tile servers.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Fill the image in the image list
- Requests a list of tiles from the given tiles .
- Create a new image image
- Returns the bounds of the bounding box .
- Returns the bounds of the boundingbox .
- Gets metadata of the box
- Generates a url based on the url
- Calculates the width of a cell
- Converts the image to a rectangle .
- Creates x y and y coordinates
mapstatic Key Features
mapstatic Examples and Code Snippets
Community Discussions
Trending Discussions on mapstatic
QUESTION
I found that prevent forgetting to initialize objects isn't fully covered in Java compiler and/or Sonar warning, I'm using latest Eclipse with latest Sonar plugin.
I'm missing error/warning about not initializing for example for Map
(similarly can be String
)
In the example Class Variable mapStatic
and Member Variable map
, both private and not final and can be declared without initialization and without any error/warning about the NullPointerException
to come.
Although for local variables as mapVar
I get compile error Compile The local variable mapVar may not have been initialized
Obviously Local variables are not assign with default value, but still why compiler/sonar doesn't warn about NullPointerException?
...Local variables are slightly different; the compiler never assigns a default value to an uninitialized local variable.
ANSWER
Answered 2018-Oct-15 at 06:08The behavior you seem to be looking for is more likely to produce unnecessary warnings than to help the design.
The fact that class-level fields get a JVM-assigned default value is by design, and it's OK for many reasons, including:
- It's possible that the field's value won't be known until after object construction. This is typical, because many field values only get set in setters.
- It's possible that the current class itself doesn't know what the value is. In this case, the responsibility to set the value is outside the class, so the warning would simply be an annoyance.
- What if the field won't be used in the current class at all?
This is the area where the responsibility lies with the developer. Only you know the order of execution, only you know what data the code depends on, and only you have the responsibility to test the code and ensure that it's bug-free.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install mapstatic
There are two ways to generate a static map from the mapstatic CLI. The command below generates a map of the UK using the OpenStreetMap tileset. The width and height of the resulting image (uk.png) are determined by the bounding box and the zoom level. If you don't know the bounding box of the area then this is a useful tool. Alternatively, you can specify a central latitude and longitude and specify the width and height.
Specifying a bounding box and zoom level
Specifying a center lat, center lng, width, height and zoom level
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page