Saving vector map into file of BMP, TIFF, RSW, PNG, KMZ formats

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The mode is intended for saving the chosen map fragment into file of BMP, TIFF, RSW, PNG, KMZ formats. Any digital vector map fragment of any contents, any kind etc. may be saved. In the future, the generated graphic files can be used in third-party applications. The opportunity of the stream saving of map image into graphic files by dimensions of the selected objects (by sheets frame) is realized.

The saved KMZ file is an archive of the KML file and a set of raster tiles. The KML file contains a description of the raster's data parameters - the files names and the coordinates of binding the raster tiles, and also  the priority of their drawing.

 

Choice and change the saved map fragment:

All region button installs all region as saved area.

For a fragment choice it is necessary to press Select button, then to mark area on a map by choice of two points. Save map into file of BMP, TIFF, RSW format dialog will be opened repeatedly.

Change button is intended for change the chosen fragment.

By object button installs the kept area sizes on overall dimensions of the chosen object. Put a tick in No Border element if the chosen object should not be in the formed image. No Border element is accessible after a choice of saved area by object.

On rasters button installs the kept area sizes on overall dimensions of all displayed rasters. Thus usage of a raster framework  (Show extracted portion of raster) is taken into account.

The choice and change of a kept fragment can be produced multiply.

 

Mode of stream saving of map image into graphic files

Before start of dialogue Save map in a file of formats BMP, TIFF, RSW it is necessary to mark objects of a map (linear closed or polygon) by which dimensions the saving of the map image is supposed. Onto each selected object the file of the specified format will be created.

For the inclusion of a mode of stream processings in Area group choose in the drop-down list a line By selected. The drop-down list is accessible at presence on a map of the selected objects.

Rules of forming a name of a created file, parameters of output of a kernel's messages and conducting magazine of transactions are specified in dialog: Choice of a mode of creation of a file name. Dialog becomes active by a click on the Setting button. The button is accessible and visible only at presence on a map of the selected objects and the included mode of stream processings.

Put a tick in No Border element if the chosen object should not be in the formed image. No Border element is accessible after a choice of saved area by object.

 

Parameters of the saved image

At copying the document fragment into  BMP format file  it is necessary to specify the following characteristics of the kept image:

-  scale (Scale field);

-  resolution capability (Resolution field);

-  the element size in meters ( Element size (meters) field);

-  bit amount on an element (Bits per pixel field);

-  type of color model (RGB, CMYK) - for TIFF and BMP.

 

Setting the parameters of the output raster in the dialog

"Saving the map image into files of graphic formats".

 

Three key parameters of the output raster (resolution, scale and element size) are interrelated among themselves:

 

Scale = PrecisionMet * MeterInElement.

 

Calculating the values ​​of parameters of the output raster when starting the dialog:

 

  1. Resolution (PrecisionMet) is taken from the map document for the current displaying scale.
  2. As a Scale the value of current scale of the map document displaying is set.
  3. The element's size of the output raster (MeterInElement) is calculated by the formula:

 

MeterInElement = Scale / PrecisionMet.

 

Calculating the values of parameters of  output  raster when changing the Scale value in the dialog:

 

  1. Resolution (PrecisionMet) remains unchanged.
  2. The size of the element of output raster (MeterInElement) is calculated by the formula:

 

MeterInElement = Scale / PrecisionMet.

 

Calculating the values ​​of parameters of the output raster when  changing the value of the Element size:

 

  1. Resolution (PrecisionMet) remains unchanged.
  2. Scale is calculated by the formula:

 

Scale = PrecisionMet * MeterInElement.

 

The choice of type of color model for TIFF and BMP is possible in a mode of 32 bits per pixel. At forming a TIFF-file the file with CMYK color model is created. If extension of created file BMP then four BMP-file with a gray-scale palette (256 gradation of grey color) are formed. Formed files have the prefixes corresponding to channels of color separation of CMYK model. For example at a choice of a filename Map.bmp, files: Map-C.bmp, Map-M.bmp, Map-Y.bmp, Map-K.bmp will be created.

At copying a fragment of the document into TIFF file an opportunity appears:

- To write down a matrix of transformation into TIFF header. It allows to Intergraph system to distinguish a binding of the raster image automatically. For writing down a matrix of transformation into TIFF put a tick in a dialog element: Intergraph TIFF.

- To apply a method of image compression PackBit. For receiving the compressed TIFF-file put a tick in a dialog element: Compress PackBit.

On the fragment dimensions and the choosen parameters the kept file size (File size (bytes) field) is estimated.

 

Raster adjustment file usage.

For saving parameters of the image the file of adjustments is stipulated.

At loading a graphic file into a raster map it is possible to use the created here file of adjustments for an automatic binding of the loaded image.

For use of a file of adjustments of a raster choose type of adjustments file in a drop-down list File of parameters and specify its name in File name of parameters field.

In the present version the following files of parameters are processed:

 *.ini (file of adjustments), a world file, file of placing .TAB (MapInfo).

 

The guidelines (Recommendations) at saving space and aerial photographs mosaics:

1. For constructing  the homogeneous raster map image before saving in BMP use (take advantage of) Histogram of raster map mode.

2. The document should contain only forming mosaic rasters for constructing a uniform raster map with the correct gray graphic palette at saving in BMP.

 

Mode of stream saving a map image into graphic files by sizes of selected objects

Before starting the dialog of Save a vector map into a file of formats BMP, TIFF, RSW it is necessary to mark objects of a map (linear closed or polygon) in sizes of which a saving the map image is supposed. For each selected object the file of the specified format will be created.

To activate the mode of stream processing in Area group choose in the drop-down list the line Selected objects. The drop-down list is available at presence on a map of selected objects.

Rules of formation of a name of a created file, parametres of giving the messages of a kernel and transactions logging are set in dialogue the Choice of mode of file formation. Dialog is started by the Setup button. The button is available and visible only at presence on a map of selected objects and the enabled mode of stream processing.

 

Check the box in the element Without a framework if the selected object should not fall into the formed image. The element Without a framework is available at presence on a map of selected objects and the enabled mode of stream processing.

 

Mode of stream saving a map image into graphic files by sizes of input rasters

Before starting the dialog of Save a vector map into a file of formats BMP, TIFF, RSW into the map document it is necessary to add rasters in sizes of which a saving the map image is supposed. For each chosen raster the file of the specified format will be created.

To activate the mode of stream processing by sizes of input rasters in the Area group choose in the drop-down list the line By rasters. The drop-down list is available at presence in the map document of the added rasters.

Rules of formation of a name of a created file, parametres of giving the messages of a kernel, transactions logging and also processed input rasters are set in dialog the Choice of mode of file formation. Dialog is started by the Setup button. The button is available and visible only at presence in the map document of the added rasters and the enabled mode of stream processing By rasters.

 

The mode of saving the map image into graphic files by page format

To enable a stream processing by format in the Area group, select the By format line in the drop-down list. This mode allows you to split the paginally selected image of the map, taking into account the specified parameters of the saved image.

The rules for generating the name of a created file, page settings are set in the Setting page options dialog. The dialog is launched by the Setup button. The button is available and visible only in the stream processing mode By format.