# Help using ImageReader and .raw files
**URL:** https://discourse.paraview.org/t/help-using-imagereader-and-raw-files/11828
**Category:** ParaView Support
**Created:** [April 7, 2023, 12:12am UTC](https://discourse.paraview.org/t/help-using-imagereader-and-raw-files/11828 "2023-04-07T00:12:41Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@mcstreic](https://discourse.paraview.org/u/mcstreic)
#### Post date: [April 7, 2023, 12:12am UTC](https://discourse.paraview.org/t/help-using-imagereader-and-raw-files/11828/1 "2023-04-07T00:12:42Z")
Hello, I am having some trouble getting my data to load. It is currently in .raw format and I obtained it from the 2004 IEEE Viz contest. When I load the data, I set the data scalar type to float, byte order to BigEndian and data extent to (0,499,0,499,0,99). I also change the representation to Volume. Each variable has 48 time steps, and I get the same result whether I load one time step or all 48. For example, if I load QCLOUD this is the result I get:
In addition, here is the link to the dataset and information about the dataset:
> **[IEEE Visualization 2004 Contest: Data Set](http://vis.computer.org/vis2004contest/data.html)**
>
> IEEE Visualization 2004 Contest Information
Any help would be appreciated.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 7, 2023, 3:17pm UTC](https://discourse.paraview.org/t/help-using-imagereader-and-raw-files/11828/2 "2023-04-07T15:17:00Z")
Its a 34G dataset. Do you have something smaller that shows the same issue ?
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### Author:  [@mcstreic](https://discourse.paraview.org/u/mcstreic)
#### Post date: [April 7, 2023, 3:32pm UTC](https://discourse.paraview.org/t/help-using-imagereader-and-raw-files/11828/3 "2023-04-07T15:32:39Z")
Unfortunately I do not. It is possible to only download one data file though. I was doing some more research into what the issue is, and interesting enough I did find this link:
[https://www.paraview.org/Wiki/ParaView/Data\_formats](https://www.paraview.org/Wiki/ParaView/Data_formats)
The section Read a Raw File into Paraview uses the same data as an example. However, I don’t understand what the example is showing exactly.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 7, 2023, 3:57pm UTC](https://discourse.paraview.org/t/help-using-imagereader-and-raw-files/11828/4 "2023-04-07T15:57:07Z")
If you want to see a .raw file in ParaView working without issue, here is one:
[HeadMRVolume.raw](https://discourse.paraview.org/uploads/short-url/5vGL401UheGDskXx6FL4GBD9LfQ.raw) (122.1 KB)
[raw.pvsm](https://discourse.paraview.org/uploads/short-url/jOFUblGGA5rcFhpEZLGGwr8ut4M.pvsm) (206.7 KB)
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### Author:  [@mcstreic](https://discourse.paraview.org/u/mcstreic)
#### Post date: [April 7, 2023, 4:42pm UTC](https://discourse.paraview.org/t/help-using-imagereader-and-raw-files/11828/5 "2023-04-07T16:42:14Z")
Here are couple examples of how the data should look with iso-surface extraction and volume rendering:
I am just wondering why when I load the data and change the representation to volume, I only get an outline of the coastline and no actual data. The same goes with iso-surface extraction.
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### Author:  [@mcstreic](https://discourse.paraview.org/u/mcstreic)
#### Post date: [April 7, 2023, 7:29pm UTC](https://discourse.paraview.org/t/help-using-imagereader-and-raw-files/11828/6 "2023-04-07T19:29:24Z")
The issue has been solved. Although the link mentions the data is in float, I changed the data type to int and it comes through now.