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loading packages

• To: mathgroup at smc.vnet.net
• Subject: [mg41990] loading packages
• From: "seferiad" <seferiad at pacbell.net>
• Date: Mon, 16 Jun 2003 03:56:45 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

If I need to load a specific package, such as, << Graphics`Graphics3D`, I
find that this only loads/works properly if this statement preceeds the
statement for which it is needed. For example, consider the following three
inputs in sequential order.

1: << Graphics`Graphics3D`

2: lpts = Table[{t Cos[t], t Sin[t], t}, {t, 0, 4Pi, Pi/20}];

3: ScatterPlot3D[lpts];

And the scatter plot is plotted correctly.


But now consider the following sequence:

1: lpts = Table[{t Cos[t], t Sin[t], t}, {t, 0, 4Pi, Pi/20}];

2: ScatterPlot3D[lpts];  Error message is returned because I forgot to load
Graphics first....

ScatterPlot3D::"shdw": "Symbol \!\(\"ScatterPlot3D\"\) appears in multiple \
contexts \!\({\"Graphics`Graphics3D`\", \"Global`\"}\); definitions in \
context \!\(\"Graphics`Graphics3D`\"\) may shadow or be shadowed by other \
definitions."

3: << Graphics`Graphics3D`

4: ScatterPlot3D[lpts];

But now it doesn't display the graph.  My solution is to quit the Kernal and
start over, making sure that I first input the << Graphics`Graphics3D`.
Does the Kernal have to be killed like this?

Thanks, Jay

• Follow-Ups:
  • Re: loading packages
    • From: Tomas Garza <tgarza01@prodigy.net.mx>