Select Pair of 2D Gel Images to Flicker Compare from 2DWG or your URLs


You may Flicker compare two of the images found in any of the following three sources. Although this database methodology was designed for 2D protein gels, it can easily be applied to other image domains and some examples are given on the Flicker home page.

Image sources: These three sources include the 1) NCI Flicker-Server, 2) the 2DWG catalog of 2D gel images, and 3) URLs that you enter for any image file on the Web. Note that if your computer has an FTP server, you can compare your own images by copying them to your FTP server and just referencing them with a URL of the form ftp://host/image-file.

Alternatively, a simpler version of this page is 2D gel images from Flicker-Server cache, or ANY Web image URL.

Self-publishing images: This means that users can self-publish their own gel images on their own FTP server. FTP servers are either included or are easily installed on Microsoft Windows95, Windows-NT, Macintosh and UNIX systems which are connected to the Internet via TCP/IP.

Image formats: For now, the images must be GIF, JPEG, TIFF formatted images. It may also handle XWD, PS, PS2 files. Images must be less than about 1.5 Mbytes or they will be rejected.

URLs allowed: Only http:// and ftp:// protocols are accepted. Note that image files specified by CGI-BIN locations will not currently work.

Image loading times: Note loading images from the 2DWG URLs or explicit URLs, may take be on the order of minutes. This is because the Flicker proxy server running on our web server first reads the gels from the Internet and then passes them back to Flicker running on your web browser. Gels from the NCI Flicker Server will load faster than the same gels on other Web sites.

Image file names: The gel images listed in the NCI Flicker-Server or 2DWG scrollable selectors below are sorted by tissue type. If the NCI Flicker-Server or 2DWG file names are are not obvious to you, you may want to check them the mappings listing or the 2DWG table. This mappings listing indicates the image URL and the corresponding Flicker GIF file names. We remapped the names using the our naming convention for gel images from the Internet.

Notice:
Because of resource limitations, this server should only be used for scientific data.

References:

  1. Lemkin PF (1997) Comparing Two-Dimensional gels across the Internet. Electrophoresis, 18, 461-470.
  2. Lemkin PF (1997) 2DWG meta-database of 2D electrophoretic gel images on the Internet. Electrophoresis, 18, 2759-2773.

To Flicker compare two gel images:

Flicker Image Comparison: Flicker is a Java program for comparing two images. See the Flicker home page for more information on Flicker.
  1. First select a different image for the Left and Right images. This entails: a) setting the radio button for the source type and b) selecting the particular image from the scrollable list or typing it directly. You may use any of the three from image sources available for both the Left and Right images. Note: you can only compare different images (not an image against itself).
  2. Then press Go Flicker to generate a Flicker comparison of this pair of images.

Canvas Size, Use JavaPlugin

Left Image:
NCI Flicker Server cached image (left)

2DWG meta-database of 2D gel images (left)

Enter any image URL (http:// or ftp://) (left)

Right Image:
NCI Flicker Server cached image (right)

2DWG meta-database of 2D gel images (right)

Enter any image URL (http:// or ftp://) (right)

Back to [ Flicker Home Page | 2DWG Home Page]

$Date: 1998/09/23 19:14:47 $ / lemkin@ncifcrf.gov (P. Lemkin, LECB, NCI)