- Select the File pull-down menu at the top left, and then select New -> HDF5.
Specify a location and type in storm.h5 for the name of your file, and click on the Save button.
You will see the storm.h5 file in the TableView:
Right click on storm.h5, and select New -> Group .
Enter Data for the name of the group and then click the Ok button. You will see the group Data in the TableView.
Right click on the group Data and select New -> Dataset.
- A window pops up on the right. Fill in the information as follows, and then click Ok (leave the Datatype information as is):
Dataset Name Storm Under Dataspace, Current size 57x57 Under Dataspace, Maximum Size 57x57 Layout Contiguous (default)
Left click on the Data group in the tree view .
to see the Storm dataset in the TableView:
Double left click on the Storm dataset in the tree view. A window with an empty spreadsheet pops open.
Copy the data from the storm1.txt file into the dataset.
If you downloaded storm1.txt, then right click on the Table menu and select Import Data from Text File. Specify a location, select storm1.txt and click on the Open button. Answer Yes in the dialog box that pops up (which asks if you wish to paste the selected data).
Alternately, you can copy/paste directly. Select and copy the data in a separate window. Position your cursor at (0,0) in your table, and select Paste from the Table menu.
The values will be entered into the spreadsheet.
- Close the dataset, and save the data.
- Right click on Storm in the tree view, and select Open As.
Select the Image button under Display As (near the top) in the Dataset Selection window that pops up. Then click OK at the bottom of the window to display the image.
The rainbow icon brings you to the Image Palette window. Click on that to play with the palette (GrayWave probably is the best choice). Close.
Click on the /Data folder in the tree view. You will see two tabs, Object Attribute Info and General Object Info, in the pane on the right site of the HDFView window.
With the left mouse button, select the Add Attribute button.
- Select the Add Attribute button to add an attribute with these values:
Name BatchID Type INTEGER Size (bits) 32 Value 3343
Select the Ok button. The attribute will show up in the Properties window.
Close the Properties window.
- Right click on storm.h5. Select New -> Group.
Enter Image for the name of the group, and click the OK button to create the group.
Right click on the Image group, and select New -> Dataset.
- Enter the following information for the dataset. Leave the Datatype as is (INTEGER):
Dataset Name Another Storm Under Dataspace, Current size 57x57 Under Dataspace, Set Max Size 57x57 Storage Layout Chunked Chunk Size 20x20 Compression gzip Compression Level 9
Double left-mouse click on the Another Storm dataset .
to display the spredsheet:
- Copy the data from the storm1.txt file into the dataset. (See the previous topic for copying storm1.txt into a dataset.)
- Close the table, and save the data.
- Right click on Another Storm, and select Open As.
Select the Image button in the Dataset Selection window that pops up. Click the Ok button at the bottom of the window to view the dataset as an image.
Creating an Image and a Subset
- Right click on the Data group and select New -> Image.
- A window pops up on the right. Enter the following and then click Ok:
Image name Storm Image Height 57 Width 57
- Close the dataset.
Double left-mouse click on the Data group to see its contents.
You will see the Storm Image dataset.
- Add data to the Storm Image dataset as was shown previously:
- Right click on Storm Image, and select Open As to open the Dataset Selection window.
- Click on the Spreadsheet button at the top left of the Dataset Selection window to view the image as a spreadsheet.
- Copy the data from the storm1.txt file into the dataset.
- Close the dataset and save the data.
- Left double click on Storm Image to see the image. Close the dataset.
Right click on Storm Image and select Show Properties from the pop-up menu, to open the Properties window. Select the Attributes tab .
to see the attributes:
- Close the Properties window.
- Right click on Storm Image and select Open As to bring up the Data Selection window.
Select a subset by clicking the left mouse on the image in the window and dragging the mouse. Notice that the Height and Width values change. Select to display it as an image. Click Ok.
- Position the cursor in the middle of the image. Press Shift+Left Mouse button and hold, and then drag the mouse to select another subset.
- Select Image->Write Selection to Image. Enter Subset for the new image name. Click Ok. The Subset image will appear in the tree view on the left.
Left double click on the image Subset to bring it up on the right.
- Close the Subset image.
- Right button click on the group Data. Select New -> Compound DS.
A window pops up on the right side of the screen. Only fill in the following fields:
Dataset name Table Dataspace (Current size only) 4 Compound Datatype Properties:
Number of Members
3 Compound Datatype Properties:
Name / Datatype / Size
Description / string / 4
Temperature / float / 1
Pressure / double / 1
Click Ok at the bottom.
Open the Data group (if it is not open) and double left click on the Table object.
Close the dataset.