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What is the .RLC File Extension?

.RLC File Extension Description:

The file extension RLC is used for image files created by the ArcView program. Image files consist of pixels for bitmap and raster files. These files are used for displaying graphics. Grids of columns and rows that produce an image form pixels. Each pixel represents the brightness and color of an image. Image file sizes are shown in bytes. The file size increases as the number and color depth of the pixels in image increases.

Image file formats have two types of compression; lossless and lossy. Lossless image file compressions reduce its file size without loss in image quality. Lossy image file compressions on the other hand, allow variable levels of quality. It takes advantage of the visual limitations of the human eye and removes information, which is not noticeable. Problem with lossy image is that file compressions have a tendency to sacrifice the quality of the image especially on high levels of compression. Bitmap is an image file format used for storing digital images. The word bitmap is a computer term that means a map of bits or pixels. Bitmaps are uncompressed image file formats that store 1 up to 64 bits per pixel.

Run-length coding is a method of reducing the size of repeating characters. The repeating strings are called runs. The strings will be then divided into 2 characteristics: count and symbol. Image file compressions can be vital in terms of transmission, archiving and multimedia applications. It disregards redundancy to make compressions more efficient. ArcView uses lossy compressions for its image file.

ArcView is a GIS (Geographic Information System) program used to create, visualize, manage and analyze geographical data. This program stores the compressed data for images in files with the file extension .rlc. Files with the RLC file extension can support most bitmap file formats. Images saved with the file extension .rlc cannot support high compression ratios. However these images are easier to open and view.

Other programs that use the file extension RLC are Image Systems CAD Overlay by Autodesk Incorporated and LoopCAD by Avenir Software Incorporated. They both use files with file extension RLC.

CAD Overlay is software used mainly for raster image files. The raster graphics contain either created or captured images. Files that use file extension RLC acts as the image storage system for the program.

LoopCAD is an application that creates circuit drawings for radiant heating systems. It is an easy-to-use program that builds professional circuit layout drawings. It uses the file extension RLC for files it creates.

Author: ESRI (,ArcView),, Autodesk Inc (,CAD Overlay),, Avenir Software (,LoopCAD),
Author URL:,ArcView),,,CADOverlay),,,LoopCAD),
Related Applications: ArcView, CAD Overlay, LoopCAD
Common Path: N/A


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Do you have errors with .RLC files?

What Causes .RLC files Errors to Occur?

A typical and frequent explanation for .RLC files errors is failure in the Windows program registry - cleaning is needed to prevent more damage in other applications and/or devices. During the time the errors persist your system remains at risk for likely blue screen errors, system failure and fatal crashes.

.RLC files Errors - Common Symptoms:

.RLC files error symptoms include application lock ups, system start up or shut down problems, slow personal computer performance, sluggish behaviour, input halts, internal speaker beeps, problems saving program files and problems during application installation.

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