Raster Images Transfer as GreyScale from ArcGis to ArcPad

[JohnMenzies]

I have rastern images in native jpg and gif format in Arcgis.

When i transfer the colour 32 bit depth jpg files -  they copy as colour images onto the ArcPad Trimbale
When I copy the colour 8 bit depth gif files -  they copy -  but only in greyscale.

Any comments on what the issue is and how to resolve would be greatly appreciated.

Thanks in advance.

John Menzies

[HannahFerrier]

Hi John,

I would recommend converting all of your rasters to .TIFF images.

.GIF images draw using 'sequential streaming' - which means that the image begins drawing in the top left and then row after row of pixels. This can impact on your drawing performance because regardless of the area of the raster that is displayed on your map, the .GIF will draw the ENTIRE image from left to right, top to bottom.

.TIFF images will draw ONLY the area visible on your map which means faster maps and better performance. You will also be able to achieve comparative compression using the .TIFF format.

This is why .TIFF is the best raster format for use in ArcPad.

For more information on choosing raster formats, see this ArcPad Help article.

🙂 Hannah

[JohnMenzies]

Hannah,

Thanks for that.  I had already resolved it but fialed to post  a "solutrion"

I copied the gif files into a file geodatabase with teh "convert to RBG" option -  the latter seems to have resolved the issue.

I agrre reagrds tiff files being the preference -  all of the discussion is quite clear.