mapscript.imageObj

class mapscript.imageObj(*args)

An image object is a wrapper for images generated by MapServer.

Attributes

format	outputFormatObj immutable an outputFormatObj representing the output format of the image
height	int immutable image height in pixels
imagepath	char immutable if image is drawn by mapObj.draw() this is IMAGEPATH
imageurl	char immutable if image is drawn by mapObj.draw() this is IMAGEURL
resolution	double immutable image resolution in pixels per inch
resolutionfactor	double immutable resolution factor
thisown	The membership flag
width	int immutable image width in pixels

Methods

__init__(*args)

Create a new imageObj instance. If filename is specified, an imageObj is created from the file and any specified width, height, and format parameters will be overridden by values of the image in filename. Otherwise, if format is specified (as an outputFormatObj) an imageObj is created using that format. If filename is not specified, then width and height should be specified. The default resolution is currently 72 and defined by MS_DEFAULT_RESOLUTION - this setting is not available in MapScript.

getBytes() → gdBuffer

Returns the image contents as a binary buffer. The exact form of this buffer will vary by MapScript language (e.g. a string in Python, byte[] array in Java and C#, unhandled in Perl)

getSize() → int

Returns the size of the binary buffer representing the image buffer

Bemerkung

The getSize method is inefficient as it does a call to getBytes and then computes the size of the byte array. The byte array is then immediately discarded. In most cases it is more efficient to call getBytes directly.

pasteImage(imageSrc: imageObj, opacity: double = 1.0, dstx: int = 0, dsty: int = 0) → int

Pastes another imageObj on top of this imageObj. If optional dstx,dsty are provided then they define the position where the image should be copied (dstx,dsty = top-left corner position).

save(filename: char, map: mapObj = None) → void

Save image to filename. The optional map parameter must be specified if saving GeoTIFF images.

saveWebImage() → char

Writes the image to temp directory. Returns the image URL.

write(*args) → int

Write image data to an open file handle. Replaces the removed saveToString function. See python/pyextend.i for the Python specific version of this method.