# Filtering by time period for all vessel types (/docs/examples/generate-png/png-example5)



**Query parameters**

| Parameter     | Value                           | Description                 |
| ------------- | ------------------------------- | --------------------------- |
| `interval`    | `DAY`                           | Daily temporal resolution   |
| `datasets[0]` | `public-global-presence:latest` | AIS vessel presence dataset |
| `color`       | `#0066cc`                       | Blue color ramp             |
| `date-range`  | `2020-01-01,2020-01-31`         | Filter to January 2020      |

**Request**

<Tabs items="['cURL', 'JavaScript']">
  <Tab value="cURL">
    ```shell
    # Make sure to replace [TOKEN] with your API Access Token.
    curl --location --request POST 'https://gateway.api.globalfishingwatch.org/v3/4wings/generate-png?interval=DAY&datasets[0]=public-global-presence:latest&color=%230066cc&date-range=2020-01-01,2020-01-31' \
      -H "Authorization: Bearer [TOKEN]"
    ```
  </Tab>

  <Tab value="JavaScript">
    ```js
    // Make sure to replace [TOKEN] with your API Access Token.
    const res = await fetch(
      'https://gateway.api.globalfishingwatch.org/v3/4wings/generate-png?interval=DAY&datasets[0]=public-global-presence:latest&color=%230066cc&date-range=2020-01-01,2020-01-31',
      {
        method: 'POST',
        headers: { Authorization: 'Bearer [TOKEN]' },
      }
    )
    const data = await res.json()
    ```
  </Tab>
</Tabs>

**Response**

```json
{
  "colorRamp": {
    "stepsByZoom": {
      "0": [
        {
          "color": "rgba(0,102,204,127)",
          "value": 2845
        },
        {
          "color": "rgba(0,102,204,153)",
          "value": 4321
        },
        {
          "color": "rgba(0,102,204,178)",
          "value": 6234
        },
        {
          "color": "rgba(0,102,204,25)",
          "value": 156
        },
        {
          "color": "rgba(0,102,204,51)",
          "value": 567
        },
        {
          "color": "rgba(0,102,204,76)",
          "value": 1234
        },
        {
          "color": "rgba(0,102,204,102)",
          "value": 1892
        },
        {
          "color": "rgba(0,102,204,255)",
          "value": 8945
        },
        {
          "color": "rgba(0,102,204,0)",
          "value": 0
        }
      ]
    }
  },
  "url": "https://gateway.api.globalfishingwatch.org/v3/4wings/tile/heatmap/{z}/{x}/{y}?format=PNG&interval=DAY&datasets[0]=public-global-presence:latest&date-range=2020-01-01,2020-01-31&style=eyJjb2xvciI6WzAsMTAyLDIwNF0sInJhbXAiOlswLDE1Niw1NjcsMTIzNCwxODkyLDI4NDUsNDMyMSw2MjM0LDg5NDVdfQ=="
}
```