# Filtering by time period and gear type (/docs/examples/generate-png/png-example2)



**Query parameters**

| Parameter     | Value                                           | Description                                                                              |
| ------------- | ----------------------------------------------- | ---------------------------------------------------------------------------------------- |
| `interval`    | `DAY`                                           | Daily temporal resolution                                                                |
| `datasets[0]` | `public-global-fishing-effort:latest`           | AIS apparent fishing effort dataset                                                      |
| `filters[0]`  | `geartype in ("tuna_purse_seines","driftnets")` | Filter by gear type. See [Gear Types supported](/docs/v3/general-api-doc/reference-data) |
| `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-fishing-effort:latest&filters[0]=geartype%20in%20(%22tuna_purse_seines%22,%22driftnets%22)&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-fishing-effort:latest&filters[0]=geartype%20in%20(%22tuna_purse_seines%22,%22driftnets%22)&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(22,63,137,25)",
          "value": 26
        },
        {
          "color": "rgba(22,63,137,102)",
          "value": 384
        },
        {
          "color": "rgba(22,63,137,255)",
          "value": 1936
        },
        {
          "color": "rgba(22,63,137,0)",
          "value": 0
        },
        {
          "color": "rgba(22,63,137,76)",
          "value": 186
        },
        {
          "color": "rgba(22,63,137,127)",
          "value": 822
        },
        {
          "color": "rgba(22,63,137,153)",
          "value": 1114
        },
        {
          "color": "rgba(22,63,137,178)",
          "value": 1502
        },
        {
          "color": "rgba(22,63,137,51)",
          "value": 88
        }
      ]
    }
  },
  "url": "https://gateway.api.globalfishingwatch.org/v3/4wings/tile/heatmap/{z}/{x}/{y}?format=PNG&interval=DAY&datasets[0]=public-global-fishing-effort:latest&filters[0]=geartype in (\"tuna_purse_seines\",\"driftnets\")&date-range=2020-01-01,2020-01-31&style=eyJjb2xvciI6WzIyLDYzLDEzN10sInJhbXAiOlswLDI2LjE2NjM4ODg4ODg4ODg5Myw4OC4yMjgwNTU1NTU1NTU2MSwxODYuMzI1ODMzMzMzMzMzMywzODQuODIwNTU1NTU1NTU1Niw4MjIuOTk1NTU1NTU1NTU0OCwxMTE0LjMyNDcyMjIyMjIyMjEsMTUwMi4wNjA4MzMzMzMzMzMyLDE5MzYuNzA0MTY2NjY2NjY1XX0="
}
```